Guilford, Joy Paul, 1897-1987, author
McGraw-Hill, 1954
Buku Teks
Banister, Peter, author
Open University Press, 1994
Buku Teks
Shaughnessy, John J., author
McGrawhill , 1994
Buku Teks
Goodwin, C. James, author
Wiley , 2010
Buku Teks
Goodwin, C. James, author
John Wiley & Sons, 2005
Buku Teks