Stevens, R. E., Loudon, D. L., & Warren, W. E. (1990). Marketing planning guide. Haworth Press.
Chicago Style (17th ed.) CitationStevens, Robert E., David L. Loudon, and William E. Warren. Marketing Planning Guide. New York: Haworth Press, 1990.
MLA (9th ed.) CitationStevens, Robert E., et al. Marketing Planning Guide. Haworth Press, 1990.
Warning: These citations may not always be 100% accurate.