Clarke E. Cochran, Lawrence C. Mayer, T.R. Carr, N. Joseph Cayer, Mark J. McKenzie, Laura R. Peck
USA Cengage Learning, 2016
Buku Teks
Mashaw, Jerry l.
St. Paul Minn, 1975
Buku Teks
Friedman, Lawrence M., 1930-, author
Tatanusa, 2001
Buku Teks
Graber, Mark A., author
Oxford University Press, 2015
Buku Teks
Poe, Jerry B., author
Richard D. Irwin, 1974
Buku Teks