Gaughan, Edward, author
Brooks/Cole, 1970
Buku Teks
Mueller, Francis J., author
Prentice-Hall, 1979
Buku Teks
Zuckerman, Martin M., author
John Wiley & Sons, 1980
Buku Teks
Leithold, Louis, author
Macmillan, 1974
Buku Teks
Dolciani, Mary P., author
Houghton Miffiln, 1971
Buku Teks