Ali@Mat Zin, Aizan, and Mohamad Redzuan Varusai. 2014. “PERANAN PERPUSTAKAAN AWAM NEGERI DALAM PENGAJIAN FALAK SYARIE: KAJIAN PERBANDINGAN DI PERAK DAN SELANGOR (Roles Played by the Public Libraries in Developing the Studies of Islamic Astronomy : A Comparative Study Between Perak and Selangor State)”. Journal of Al-Tamaddun 9 (1):67-81. https://borneojournal.um.edu.my/index.php/JAT/article/view/8671.