Lerner, Marcia, author
Random House, 2001
Buku Teks
McCrimmon, James W., author
Houghton Mifflin, 1984
Buku Teks
Scharton, Maurice
Allyn and Bacon, 1993
Buku Teks
Headrick, Paul, 1957-, author
Wiley-Blackwell, 2014
Buku Teks
Booth, Wayne C., author
Harper & Row, 1987
Buku Teks