APA (7th ed.) Citation

Grant, E. L., Ireson, W. G., & Leavenworth, R. S. (1976). Principles of engineering economy (6th ed.). The Ronald Press Company.

Chicago Style (17th ed.) Citation

Grant, Eugene Lodewick, W. G. Ireson, and Richard S. Leavenworth. Principles of Engineering Economy. 6th ed. New York: The Ronald Press Company, 1976.

MLA (8th ed.) Citation

Grant, Eugene Lodewick, et al. Principles of Engineering Economy. 6th ed. The Ronald Press Company, 1976.