Jones, Marsha, author
Palgrave, 1999
Buku Teks
Biagi, Shirley, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Biagi, Shirley, author
Cengage Learning, 2015
Buku Teks
Vivian, John, author
Pearson and AB, 2007
Buku Teks
editor, Joseph F. Littell
McDougal, Littel and Company, 1976
Buku Teks