Barret, Richard L., author
Charles E. Merril, 1965
Buku Teks
Vowles, P.D., author
Pergamon Press, 1980
Buku Teks
Gail A. Steehler, editor
McGraw-Hill, 2009
Buku Teks
Timberlake, Karen C., author
Pearson Benjamin Cummings, 2007
Buku Teks
Bodner, George M.
Burgess, 1981
Buku Teks