Title & Al-Qarni, A. A. (1999). 30 tanda-tanda orang munafik. Pustaka Ilmi.
Chicago Style (17th ed.) CitationTitle and A'Aidl Abdullah Al-Qarni. 30 Tanda-tanda Orang Munafik. Selangor: Pustaka Ilmi, 1999.
MLA (9th ed.) CitationTitle and A'Aidl Abdullah Al-Qarni. 30 Tanda-tanda Orang Munafik. Pustaka Ilmi, 1999.
Warning: These citations may not always be 100% accurate.