George Allen and Unwin, 1984
Buku Teks
Clark, Giles, author
Routledge, 1996
Buku Referensi
edited by Philip G. Altbach, Edith S. Hoshino
Fitzroy Dearborn, 1995
Buku Referensi
Clark, Giles, author
Routledge , 1996
Buku Teks
Jones, Hugh
Routledge, 1996
Buku Teks