Baumol, W J.(1957). On the Role of Marketing Theory. Journal of Marketing, 21(4), 413-418. doi:10.1177/002224295702100404
MLA CitationBaumol, W. J. "On the Role of Marketing Theory". Journal of Marketing, 21.4 ( 1957 ): 413-418.
Remember to check citations for accuracy before including them in your work.