AL-Qardhawy, Y., & Kathur Suhardi. (2002). Konsep tawakal dalam Islam. Pustaka Syuhada.
Chicago Style (17th ed.) CitationAL-Qardhawy, Yusuf, and Kathur Suhardi. Konsep Tawakal Dalam Islam. Kuala Lumpur: Pustaka Syuhada, 2002.
MLA (9th ed.) CitationAL-Qardhawy, Yusuf, and Kathur Suhardi. Konsep Tawakal Dalam Islam. Pustaka Syuhada, 2002.
Warning: These citations may not always be 100% accurate.