Gaya APA
Qasim, Yusuf. (1981).
Nadhariyah al Dharurah / Yusuf Qasim .
Kairo:
Dar Al Nahdhah Al rabiyah.
Gaya Chicago
Qasim, Yusuf.
Nadhariyah al Dharurah / Yusuf Qasim.
Kairo:
Dar Al Nahdhah Al rabiyah,
1981.
Buku.
Gaya MLA
Qasim, Yusuf.
Nadhariyah al Dharurah / Yusuf Qasim.
Kairo:
Dar Al Nahdhah Al rabiyah,
1981.
Buku.
Gaya Turabian
Qasim, Yusuf.
Nadhariyah al Dharurah / Yusuf Qasim.
Kairo:
Dar Al Nahdhah Al rabiyah,
1981.
Buku.