Enos, Matthew, author
Wadsworth, 2002
Buku Teks
Valentino, Lisa, author
Thomson Wadsworth, 2003
Buku Teks
Banister, Peter, author
Open University Press, 1994
Buku Teks
Peterson, Christopher, author
W.W. Norton & Company, 1984
Buku Teks
edited by Cath Sulivan and Michael A. Forrester
Sage, 2019
Buku Teks