Gaya APA

Usman, S. (1994). Hukum perwakafan di Indonesia / Suparman Usman . : Darul Ulum Press.

Gaya MLA

Usman, Suparman. "Hukum perwakafan di Indonesia / Suparman Usman". : Darul Ulum Press, 1994. Referensi.