Kazmier, Leonard J., author
McGraw-Hill, 2003
Buku Teks
Walpole, Ronald E., author
Prentice-Hall, 1993
Buku Teks
Guilford, J. P. (Joy Paul), 1897-1987, author
McGraw-Hill, 1987
Buku Teks
Guilford, Joy Paul, 1897-1987, author
McGraw-Hill Book Company,Inc., 1956
Buku Teks
Cryer, Jonathan, author
PWS-Kent, 1991
Buku Teks