Scharton, Maurice
Allyn and Bacon, 1993
Buku Teks
Mundhenk, Robert T., author
Houghton Mifflin, 1978
Buku Teks
Lerner, Marcia, author
Random House, 2001
Buku Teks
McCrimmon, James W., author
Houghton Mifflin, 1984
Buku Teks
Booth, Wayne C., author
Harper & Row, 1987
Buku Teks