Childe, V. Gordon
Penguin Books, [1946]
Buku Teks SO
Toynbee, Arnold J.
Kodansha International, 1976
Buku Teks SO
Kuhn, Herbert
Random House, 1955
Buku Teks
Scheele, William E.
World Publishing, 1957
Buku Teks
edited by John D. Evans, Barry Cunliffe and Colin Renfrew
Thames and Hudson, 1981
Buku Teks SO