Watson, Patty Jo, author
Columbia University Press , ss 1971
Buku Teks
Parkes, P.A
Croom Helm , 1986
Buku Teks
Jones, Andrew
Cambridge University Press, 2002
Buku Teks
Edited by Don Brothwell, Eric Higgs
Thames and Hudson, 1971
Buku Referensi
Clarke, David L, author
Methuen, 1968
Buku Teks