Western Press Agency, 1962
Buku Teks
Good Jeff, author
Cambridge University Press, 2016
Buku Teks
Senk, Peter, author
Routledge, 2018
Buku Teks
edited by Alice Caffarel
Philadelphia , 1984
Buku Teks
Croft, William
Cambridge University Press , 1990
Buku Teks