APA (7th ed.) Citation

Sittenfeld, H., & Dellow, E. L. (1967). Test marketing. Business Publications.

Chicago Style (17th ed.) Citation

Sittenfeld, Hans, and E. L. Dellow. Test Marketing. London: Business Publications, 1967.

MLA (9th ed.) Citation

Sittenfeld, Hans, and E. L. Dellow. Test Marketing. Business Publications, 1967.