Gaya APA
Khuli, Y, T, A.
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Kairo:
al-Hay\'ah al-Misriyyah al-Aamah.
Gaya MLA
Khuli, Yumna, Tharif, Al.
"Falsafah Karl Popper".
Kairo:
al-Hay\'ah al-Misriyyah al-Aamah,
1989.
Buku.