Dunn, S. Watson, author
Dryden, 1978
Buku Teks
Littlefield, James E., author
Vakils, Feffer and Simons Private, 1971
Buku Teks
Wells, William D., author
Prentice-Hall, 2000
Buku Teks
Norris, James S., author
Prentice-Hall, 1980
Buku Teks
Weilbacher, William M
Macmillan, 1979
Buku Teks