Shidle, Norman G., author
McGraw-Hill, 1951
Buku Teks
Holladay, Sylvia A., author
Prentice-Hall, 1981
Buku Teks
Beck, Roger, author
Blackwell Publishing, 2007
Buku Teks
Satyawati Sulaiman, author
Archaeological Foundation, [date of publication not identified]
Buku Teks
Windelband, Wilhelm, author
Dover, 1956
Buku Teks