Osgood, Robert Endicott, author
University of Chicago Press, 1962
Buku Teks
Salvadori, Massimo, author
Van Nostrand, 1957
Buku Teks
Macleride, Sean, author
Balai Pustaka, 1983
Buku Teks
Haynes, W. Warren (William Warren), 1921-1972, author
PRENTOCE-HALL, Inc, Englewood Clifts, 1969
Buku Teks
Fitagerald, Hiram E
0, 1982
Buku Teks