Gamble, Michael W., author
McGraw Hall, 1986
Buku Teks
Rayner, Philip, 1947-
Routledge, 2008
Buku Teks
Turow, Joseph, author
Routledge, 2009
Buku Teks
Biagi, Shirley, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Biagi, Shirley, author
Cengage Learning, 2015
Buku Teks