Abdelrahman Tareq Sadeq Elsharqawy, author
Graduate School of Language and Culture, Osaka University, 2019
Artikel Jurnal
Craig, Oman
Oxford University Press , 1982
Buku Teks
Allen, Calvin H., Jr
Westview Press, 1987
Buku Teks
Herlambang Prijatno Soeparto, author
Program Pascasarjana Universitas Indonesia, 1997
UI - Tesis Membership
Oman Sukmana, author
Universitas Muhammadiyah, 2005
Buku Teks