APA (7th ed.) Citation

Amin, A., & Ma\'ruf, F. (1975). Etika ( Ilmu Akhlak ). Bulan Bintang.

Chicago Style (17th ed.) Citation

Amin, Ahmad, and Farid Ma\'ruf. Etika ( Ilmu Akhlak ). Bulan Bintang, 1975.

MLA (8th ed.) Citation

Amin, Ahmad, and Farid Ma\'ruf. Etika ( Ilmu Akhlak ). Bulan Bintang, 1975.

Warning: These citations may not always be 100% accurate.