Shaffer, David R. (David Reed), 1946-, author
Wadsworth/Thomson Learning, 2002
Buku Teks
Wenar, Charles, 1922-, author
McGraw-Hill , 1994
Buku Teks
Wenar, Charles, 1922-, author
McGraw-Hill, 2000
Buku Teks
Pressley, Michael, author
Guilford Press, 2007
Buku Teks
Wicks-Nelson, Rita, author
Pearson Education, 2014
Buku Teks