Soleri, Paolo
Cosanti Press, 2006
Buku Teks
Caidin, Martin, author
Dutton, 1963
Buku Referensi
Kluckhohn, Clyde, author
Whittlesey House, 1971
Buku Teks
Dixit, J. N. (Jyotindra Nath), 1936-2005, author
Routledge, 2002
Buku Teks
Vaeth, J. Gordon
The Ronald Press, 1965
Buku Teks