APA (7th ed.) Citation

Dyar, R. E. (1942). Newspaper promotion and research. Harper & Brothers.

Chicago Style (17th ed.) Citation

Dyar, Ralph E. Newspaper Promotion and Research. New York ; London: Harper & Brothers, 1942.

MLA (9th ed.) Citation

Dyar, Ralph E. Newspaper Promotion and Research. Harper & Brothers, 1942.