APA (7th ed.) Citation

Ernest, J. W., & Ashmun, R. D. (1980). Selling principles r practices. McGraw-Hill.

Chicago Style (17th ed.) Citation

Ernest, John W., and Richard D. Ashmun. Selling Principles R Practices. McGraw-Hill, 1980.

MLA (8th ed.) Citation

Ernest, John W., and Richard D. Ashmun. Selling Principles R Practices. McGraw-Hill, 1980.