by Malcolm Hardy ... [and others]
Weidenfeld and Nicolson, 1990
Buku Teks SO
edited by Kevin McConway and Basiro Davey
Open University Press, 2003
Buku Teks SO
Nightingale, Virginia
Routledge, 1996
Buku Teks SO
Abdelrahman Tareq Sadeq Elsharqawy
Graduate School of Language and Culture, Osaka University, 2019
Artikel Jurnal
editor, Bert Kaplan
Harper & Row, 1961
Buku Teks SO