APA (7th ed.) Citation

Duddy, E. A. (1947). Marketing, an industrial approach. McGraw-Hill.

Chicago Style (17th ed.) Citation

Duddy, Edward Augustin. Marketing, an Industrial Approach. New York: McGraw-Hill, 1947.

MLA (9th ed.) Citation

Duddy, Edward Augustin. Marketing, an Industrial Approach. McGraw-Hill, 1947.