edited by Martin Tucker
Continuum, 1989
Buku Referensi
edited, Suman Gupta, David Johnson
Routledge , 2005
Buku Teks
Haftman, Werner, author
Frederick A. Praeger, Pub., 1960
Buku Referensi
Haftman, Werner, author
Frederick A. Praeger, Pub., 1960
Buku Referensi
Yale University Press, 1992
Buku Teks