Buono, Anthony F., author
Jossey-Bass, 1989
Buku Teks
Boesch, Christophe, author
Cambridge University Press, 2013
Buku Teks
Greenberg, Jerald, author
Pearson Education, 2003
Buku Teks
Barron, Robert A., author
Allyn and Bacon, 1990
Buku Teks
Greenberg, Jerald, author
Prentice-Hall, 2003
Buku Teks