Burks, Ardath W., author
Westview Press, 1982
Buku Teks
Burks, Ardath W.
Boulder Westview Press 1991,
Buku Teks
Stone, Clarence N., author
University of Chicago Press, 2015
Buku Teks
University of Tokyo Press, 1970
Buku Teks
Mills, C. Wright, author
Oxford University Press, 1968
Buku Teks