Middleton, David, author
Sage, 2005
Buku Teks
edited by Michael Linden, Krzysztof Rutkowski
Elsevier, 2013
eBooks
Malouf, David, 1934-, author
Pantheon Books, 1994
Buku Teks
Baron, Robert A., author
Pearson, 2009
Buku Teks
Franzoi, Stephen L., author
McGraw-Hill, Higher Education, 2009
Buku Teks