Coyle, David Cushman, 1887-1969, author
A Mentor Book, 1963
Buku Teks
Crowley, Thomas E., 1948-, author
John Wiley & Sons, 1994
Buku Teks
edited by Edwin Mansfield
W.W. Norton, 1964
Buku Teks
edited by Margaret S. Stockdale, Faye J. Crosby
Blackwell, 2004
Buku Teks
Patman, Wright, 1893-1976, author
Bantam Books, 1957
Buku Teks