Mance, Osborne
Oxford University Press, 1947
Buku Klasik
Kettner, Peter M, author
SAGE, 2017
Buku Teks
Thompson, Frank J., author
Thomson - Wadsworth, 2003
Buku Teks
Martin, Lawrence L.
Sage Publications,Inc., 1993
Buku Teks
edited by Steven W. Hays, Richard C. Kearney
Prentice-Hall, 1990
Buku Teks