Johnson, David W., 1940-, author
Pearson, 2017
Buku Teks
Ellis, Donald G., author
McGraw-Hill, 1994
Buku Teks
Galanes, Gloria J., author
McGraw-Hill, 2013
Buku Teks
edited by Michael A. Hogg and R. Scott Tindale
Blackwell, 2003
Buku Teks
Corey, Gerald, author
Brooks/Cole, Cengage Learning, 2012
Buku Teks