McDonald, Lee Cameron, author
Harcourt, Brace & World, 1968
Buku Teks
McDonald, Lee Cameron, author
Harcour Brace Jovanwich, 1968
Buku Teks
Sabine, George H., author
Dryden, 1973
Buku Teks
Ake, Claude
The Dorsey Press, 1967
Buku Teks
Sabine, George H., author
George G. Harrap, 1952
Buku Teks