Laird, Charlton Grant, 1901-
Fawcett World Library, 1957
Buku Teks
Australian Government Publishing Service , 1994
Buku Teks
Oxford Univertity Press, 2004
Buku Teks
Schaller, Lyle E., author
Nashville-Abingdon Press , 1966
Buku Teks
Rouner, Arthur A.
Writers Club Press, 2002
Buku Teks