Gennifer Furst, editor
SAGE , 2009
Buku Teks
Copes, Heith, author
McGraw-Hill, 2009
Buku Teks
Adler, Freda, author
McGraw-Hill, 1991
Buku Teks
Siegel, Larry J., 1959-, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Adler, Freda, author
McGraw-Hill, 1998
Buku Teks