Camougis, George
McGraw-Hill, 1981
Buku Teks
edited by Frederick H. Kanfer and Arnold P. Goldstein
Pergamon Press, 1991
Buku Teks
Stryker, Perrin
McGraw-Hill, 1954
Buku Teks
Hutchinson, Ian H., 1951-
Cambridge University Press, 2015
Buku Teks
Annas, George J.
Humana Press, 1988
Buku Teks