Harris, Seymour E., editor
McGraw-Hill Book Company, Inc., 1962
Buku Teks
Duronio, Margaret A.
Jossey - Bass Publishers , 1991
Buku Teks
DeVane, William Clyde
Harvard University Press, 1965
Buku Teks
Wiggins, Sam P.
McCutchan Publishing Corporation, 1966
Buku Teks
McGraw-Hill, 1973
Buku Teks