Lall, Marie, editor
Sense, 2012
eBooks
Barusch, Amanda Smith, author
Brooks / Cole, 2009
Buku Teks
Barusch, Amanda Smith, author
Thomson Brooks/Cole, 2006
Buku Teks
Campbell, Nancy D., author
Routledge, 2000
Buku Teks
Jansson, Bruce S., author
Cengage Learning, 2018
Buku Teks