edited by Max F. Millikan
Little, Brown, 1961
Buku Teks
edited by Max F. Millikan and Donald L.M. Blackmer
Little, Brown, 1961
Buku Teks
Mayer, Thomas, author
Random House, 1968
Buku Teks
Swisher, Carl Brent, author
University of Chicago Press, 1946
Buku Teks
Rosati, Jerel A., 1953-, author
Wadsworth, 2007
Buku Teks