Cronback, Lee J.
Harper International Student , 1964
Buku Teks
Urbina, Susana, author
John Wiley & Sons, 2004
Buku Teks
Anastasi, Anne, author
Macmillan, 1982
Buku Teks
Anastasi, Anne, author
Macmillan, 1968
Buku Teks
Anastasi, Anne, author
Prentice-Hall, 1997
Buku Teks