Atchley, R. C. (1989). A Continuity Theory of Normal Aging. The Gerontologist, 29(2), 183–190. https://doi.org/10.1093/geront/29.2.183
Belani, I. Y., Ishak, A., & Hasanah, V. R. (2017). Pengaruh Kinerja Musyrif Terhadap Motivasi Belajar Peserta Lansia (Survey pada Peserta Lansia di Pesantren Masa Keemasan Daarut Tauhid Bandung, 2016). Jurnal Pendidikan Luar Sekolah, 13(1), 106–120. Retrieved from https://ejournal.upi.edu/index.php/pls/article/view/8730/5418
Creswell, J. W. (2013). Research Design. Thousand Oaks: SAGE Publications.
Hatimah, I. (2017). The Implementation of Lifelong Learning in Family. Proceedings of the 3rd NFE Conference on Lifelong Learning (NFE 2016), 88(20), 83–85. Paris, France: Atlantis Press. https://doi.org/10.2991/nfe-16.2017.20
Indati, A., Adiyanti, M. G., & Ramdhani, N. (2019). Peran Wisdom terhadap Life Satisfaction pada Lansia. Gadjah Mada Journal of Psychology (GamaJoP), 5(1), 60–69. https://doi.org/10.22146/gamajop.47176
Kartini, K. (2019). Penguatan Diri Meraih Husnul Khotimah Melalui Program Pesantren Masa Keemasan Di Pondok Pesantren Daarut Tauhiid (Universitas Pendidikan Indonesia). Universitas Pendidikan Indonesia. Retrieved from http://repository.upi.edu/42946/1/S_PLS_1504907_Title.pdf
Knowles, M., Holton, E., & Swanson, R. A. (2015). The Adult Learner: The Definitive Classic in Adult Education and Human Resource Development (8th ed.). New York: Routledge.
Maryam, S., Firdaus, E., & Komariah, K. S. (2014). Model Pendidikan Islam Bagi Lansia Di Daarut Tauhiid Bandung. TARBAWY : Indonesian Journal of Islamic Education, 1(2), 175–189. https://doi.org/10.17509/t.v1i2.3773
Ramdani, R. (2016). Kontribusi Kecerdasan Spiritual dan Dukungan Keluarga Terhadap Kepuasan Hidup Lansia Serta Implikasinya Dalam Pelayanan Bimbingan dan Konseling. KOPASTA: Jurnal Program Studi Bimbingan Konseling, 2(2), 70–81. https://doi.org/10.33373/kop.v2i2.301
Rosana, E. (2015). Modernisasi dalam Perspektif Perubahan Sosial. Al-Adyan Jurnal Studi Lintas Agama, 10(1), 67–82. Retrieved from https://media.neliti.com/media/publications/177402-ID-modernisasi-dalam-perspektif-perubahan-s.pdf
Shaw, R., & Stevens, B. (2019). Religion and Spirituality in End-of-Life Care. In D. Gu & M. E. Dupre (Eds.), Encyclopedia of Gerontology and Population Aging. Cham: Springer International Publishing. https://doi.org/10.1007/978-3-319-69892-2
Suryadi, A. (2014). Pendidikan Indonesia Menuju 2025 : Outlook: Permasalahan, Tantangan, dan Alternatif Kebijakan. In P. Latifah (Ed.), PT Remaja Rosdakarya (1st ed.). Bandung: Remaja Rosdakarya. Retrieved from https://books.google.co.id/books?id=aTGxoQEACAAJ&dq=Ace+Suryadi,+Pendidikan+Indonesia+Menuju+2025&hl=id&sa=X&ved=0ahUKEwiP5oX_gb_pAhUq7XMBHQitCtkQ6AEIKDAA
Suryadi, S., & Priajana, N. (2020). Initiating Educational Policies for Older Adults : Analysis of the Implementation of Lifelong Learning Concepts. International Journal of Education and Humanities (IJEH), 1(1), 7–18. Retrieved from http://i-jeh.com/index.php/ijeh/article/view/7/12
Tam, M. (2013). Perceptions of successful ageing and implications for late-life learning. Studies in Continuing Education, 35(3), 281–298. https://doi.org/10.1080/0158037X.2012.746228
Tornstam, L. (1994). Gerotranscendence - A Theoretical and Empirical Exploration. In Aging and the Religious Dimension (pp. 203–225). Boston: Auburn House Publishing. Retrieved from http://repositorii.urindo.ac.id/repository2/files/original/94bf151af9fff10ee512fe9032b10e5536cb401a.pdf