Ferguson, Wallace K., author
Houghton Mifflin, 1962
Buku Teks
Brunn, Geoffrey
Oxford University Press, 1960
Buku Teks
Childe, V. Gordon, author
Routledge, 1996
Buku Teks
Schapiro, J. Salwyn
Houghton Miffiln, 1953
Buku Teks
Bottici, Chiara, author
Cambridge University Press, 2013
Buku Teks