Gaya APA
Hasan, A. (1984).
Pintu ijtihad sebelum tertutup. : The early development of Islamic jurisprudence, 1970. .
Bandung:
Pustaka.
Gaya MLA
Hasan, Ahmad..
"Pintu ijtihad sebelum tertutup. : The early development of Islamic jurisprudence, 1970. ".
Bandung:
Pustaka,
1984.
Buku.