Bagnall, Roger S.,
Routledge, 1995
Buku Teks
John Hartley [and others]
Rinehart and Winston, 1962
Buku Teks
Bone, Robert G., author
Littlefield, Adam, 1957
Buku Teks
edited by John Miksic
Archipelago Press, [date of publication not identified]
Buku Teks
Scharbach, Alexander, author
McGraw-Hill , 1965
Buku Teks