Papinot, E., author
Charles E. Tuttle, 1972
Buku Referensi
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, author
Scarecrow Press, 2012
Buku Teks
Cook, Chris, author
Macmillan, 1990
Buku Referensi