Scheele, William E., author
World Publishing, 1957
Buku Teks
Murray, Raymond W., author
Bruce Publishing, 1943
Buku Teks
Thames and Hudson, 1981
Buku Teks
Bellwood, Peter, author
Auckland Collins 1978,
Buku Teks
Childe, V. Gordon, author
Cambridge University Press, 1930
Buku Teks