Mohd Nathir, K.A. et al. 2020. Pola Kajian Hari Kiamat: Sorotan 30 Tahun Literatur Secara Sistematik (1988-2018) (Research on Judgment Day: 30th Years Systematic Literature Review (1988-2018). UMRAN - International Journal of Islamic and Civilizational Studies. 7, 1 (Feb. 2020), 85–101. DOI:https://doi.org/10.11113/umran2020.7n1.365.