Carson, Robert C., author
Longman, 1997
Buku Teks
edited by Henry Wechsler, Leonard Solomon, Bernard M. Kramer
Holt, Rinehart and Winston, 1970
Buku Teks
Coleman, James C.
Scott, Foresman,, 1986
Buku Teks
Kearney, Christopher A., author
Wadsworth and Cengage Learning, 2012
Buku Teks
Schwartz, Steven, author
Mayfield, 2000
Buku Teks