APA (7th ed.) Citation

Underwood, R. S., Nelson, T. R., & Selby, S. M. (1947). Intermediate algebra. Macmillan Co..

Chicago Style (17th ed.) Citation

Underwood, R. S., Thomas R. Nelson, and Samuel M. Selby. Intermediate Algebra. New York: Macmillan Co., 1947.

MLA (9th ed.) Citation

Underwood, R. S., et al. Intermediate Algebra. Macmillan Co., 1947.