Driver, Harold E., author
University of Chicago Press, 1961
Buku Teks
Bunker, Robert, 1918-
Rutger?s University Press, 1959
Buku Teks
Lewis, Oscar, author
0, 1988
Buku Teks
Lewis, Oscar, author
0, 1988
Buku Teks
Myers, Charles Nash, author
Princeton University , 1965
Buku Teks