Quezon City : University of the Philippines
Majalah, Jurnal, Buletin
Depok : KMSJ FIB-UI
Majalah, Jurnal, Buletin
Amsterdam : Elsevier Science Publishers
Majalah, Jurnal, Buletin
Lutfi Muhammad Zaki
Kairo Dar al-Ma'arif 1957
Buku Teks
Semarang : FPBS IKIP Semarang
Majalah, Jurnal, Buletin