Archambeault, William G., author
Prentice-Hall, 1982
Buku Teks
Goodman, Philip, author
Oxford University Press, 2017
eBooks
New York: W.W.Norton & Company, 1988,
Buku Referensi
Siegel, Larry J., 1959-, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Lawrence, Richard, author
Sage, 2008
Buku Teks