edited by Mitford M. Mathews
The University of Chicago Press, 1956
Buku Referensi
Graeme Aplin, S.G. Foster, Michael McKernan, editor
Fairfax, Syme & Weldon Associates, 1987
Buku Referensi
Somel, Selcuk Aksin
Scarecrow Press, 2012
Buku Teks
Cook, Chris
Macmillan, 1990
Buku Referensi
Nahm, Andrew C.
Scarecrow Press, 2004
Buku Teks