Cozby, Paul C., author
McGraw-Hill, 2003
Buku Teks
Gravetter, Frederick J., author
Wadsworth and Cengage Learning, 2009
Buku Teks
Gravetter, Frederick J., author
Wadsworth and Cengage Learning, 2013
Buku Teks
Howell, David C.
Thomson/Wadsworth, 2008
Buku Teks
Howell, David C., author
Cengage Learning, 2017
Buku Teks