Oskamp, Stuart, author
Lawrence Erlbaum , 2005
Buku Teks
Artikel Jurnal
Lichtenberg, Joseph D., author
Routledge, 2011
Buku Teks
Margulis, Lynn, 1938-, author
Basic Books, 1998
Buku Teks
edited by Richard J. Wood, Katina Strauch
The Haworth Press, 1992
Buku Teks