APA (7th ed.) Citation

Humphries, Townsend, & Nelson. (2004). Two steps to a perfect golf swing. McGraw-Hill.

Chicago Style (17th ed.) Citation

Humphries, Townsend, and Nelson. Two Steps to a Perfect Golf Swing. New York,NY: McGraw-Hill, 2004.

MLA (8th ed.) Citation

Humphries, et al. Two Steps to a Perfect Golf Swing. McGraw-Hill, 2004.