Turner, Ralph, author
McGraw-Hill, 1941
Buku Teks
Major, J. Russel, author
J.B. Lippincott, 1966
Buku Teks
Marcuse, Herbert, author
The Beacon Press, 1956
Buku Teks
Naidis, Mark, author
Dryden Press, 1972
Buku Teks
Bonner, Thomas Neville, author
Prentice-Hall, 1963
Buku Teks