Anastasi, Anne, author
Macmillan, 1964
Buku Teks
Anastasi, Anne, author
Prenhallindo, 1998
Buku Teks
Brown, Frederick G., author
Dryden Press, 1970
Buku Teks
Swerdlik, Mark E.
Mayfield Publishing Company, 1999
Buku Teks
Groth-Marnat, Gary, author
John Wiley &Sons, Inc, 2004
Buku Teks