Stewart, John C., author
Burgess, 1968
Buku Teks
Stokes, William Lee, 1915-, author
Prentice-Hall, 1966
Buku Teks
Wicander, Reed, author
Brooks/Cole Cengage Learning, 2013
Buku Teks
Woodford, A.O., author
W.H. Freeman, 1965
Buku Teks
Carlson, Diane H., author
McGraw-Hill , 2008
Buku Teks