Routledge, 2004
Buku Teks
James A. Coleman; John Klapper
Routledge, 2005
Buku Teks
Fries, Charles Carpenter, author
University of Michigan Press, 1951
Buku Teks
Sullivan, Peter, 1948-, author
Springer, 2013
Buku Teks
edited by Douglas McConatha, Christian Penny, Jordan Schugar, and David Bolton
Igi Global, 2014
Buku Teks