Gaya APA
Ridhwan, R, M.
(1992).
20 Prinsip islam: komentar terhadap imam hasan al banna
.
Solo:
Ramadhani.
Gaya MLA
Ridhwan, Ridhwan, Muhammad.
"20 Prinsip islam: komentar terhadap imam hasan al banna".
Solo:
Ramadhani,
1992.
Printed Book.