Gaya APA
Gulfieh, R. (1966).
al-Madhahib al-Wujudiyyah: Min Kierkigard ila Jean Paul Sartre .
Kairo:
al-Dar al-Misriyyah.
Gaya MLA
Gulfieh, Riges.
"al-Madhahib al-Wujudiyyah: Min Kierkigard ila Jean Paul Sartre".
Kairo:
al-Dar al-Misriyyah,
1966.
Buku.