APA (7th ed.) Citation

Ryans, J. K. (1980). Marketing doctoral dissertation abstracts, 1979. American Marketing Association.

Chicago Style (17th ed.) Citation

Ryans, John K. Marketing Doctoral Dissertation Abstracts, 1979. Chicago, Ill.: American Marketing Association, 1980.

MLA (9th ed.) Citation

Ryans, John K. Marketing Doctoral Dissertation Abstracts, 1979. American Marketing Association, 1980.