Zechmeister, Jeanne S., author
McGraw-Hill, 2001
Buku Teks
Zechmeister, Eugene B., author
McGraw-Hill, 1992
Buku Teks
Coolican, Hugh, author
Hodder & Stoughton, 2009
Buku Teks
Psychology Press, 2004
Buku Teks
Bordens, Kenneth S., author
McGraw-HIll, 2005
Buku Teks