Riley E. Dunlap ... et all, editor
Rowman & Littlefield Publishers, INC, 2001
Buku Teks
Appelrouth, Scott A., 1965-, author
Sage, 2012
Buku Teks SO
Ritzer, George, author
McGraw-Hill, 1992
Buku Teks SO
Ritzer, George, author
McGraw-Hill, Higher Education, 2008
Buku Teks SO
Kinloch, Graham C., author
Prentice-Hall, 1981
Buku Teks