Baca, Leonard M.
Prentice-Hall, 1998
Buku Teks
Mary Ann Byners
McGraw-Hill, 2011
Buku Teks
MaryAnn Byrnes, editor
McGraw-Hill, 2011
Buku Teks
Hallahan, Daniel P., author
Prentice-Hall, 1988
Buku Teks
Hallahan, Daniel P., author
Allyn and Bacon, 1994
Buku Teks