APA (7th ed.) Citation

Grayson, R. A., & Olsen, R. A. (1971). Introduction to marketing: A practical approach. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Grayson, Robert A., and Reynold A. Olsen. Introduction to Marketing: A Practical Approach. New York: Appleton-Century-Crofts, 1971.

MLA (9th ed.) Citation

Grayson, Robert A., and Reynold A. Olsen. Introduction to Marketing: A Practical Approach. Appleton-Century-Crofts, 1971.