Estridge, Barbara H., author
Delmar Cengage Learning, 2012
Buku Teks
Seidman, Lisa A., author
Pearson Benjamin Cummings, 2008
Buku Teks
Sherman, Alan, author
Houghton Mifflin, 1976
Buku Teks
Cunningham, Charles H., author
Burgess, 1973
Buku Teks
Keeton, William T., author
W.W. Norton, 1968
Buku Teks