Glenn Adams, editor
Decade of Behavior (American Psychological Association), 2008
Buku Teks
Fredrickson, George M., author
Univ. of California Press, 2000
Buku Teks
Player, Macka
West Publishing, 1992
Buku Teks
Aguirre, Adalberto, author
McGraw-Hill, 2001
Buku Teks
Richards, Graham, author
Routledge, 1997
Buku Teks