Gaya APA

Asyur, D, M, A. (). Khotbah dan Wasiat Umar Ibnul Khaththab . : Gema Insani Press.

Gaya MLA

Asyur, Dr., Muhammad, Ahmad. "Khotbah dan Wasiat Umar Ibnul Khaththab". : Gema Insani Press, . Text.