APA (7th ed.) Citation

Ruud, W. L., & Shell, T. L. (2007). College algebra. Worth Publishers.

Chicago Style (17th ed.) Citation

Ruud, Warren L., and Terry L. Shell. College Algebra. New York, N.Y: Worth Publishers, 2007.

MLA (9th ed.) Citation

Ruud, Warren L., and Terry L. Shell. College Algebra. Worth Publishers, 2007.