APA (7th ed.) Citation
Wynder, E. L., & Hoffmann, D. (1968). Toward a less harmful Cigarette: A workshop held at the world conference on smoking and health, Sept. 11-13, 1967. Nat. Cancer Institute.
Chicago Style (17th ed.) Citation
Wynder, Ernest Ludwig, and Dietrich Hoffmann. Toward a Less Harmful Cigarette: A Workshop Held at the World Conference on Smoking and Health, Sept. 11-13, 1967. Bethesda, Md: Nat. Cancer Institute, 1968.
MLA (9th ed.) Citation
Wynder, Ernest Ludwig, and Dietrich Hoffmann. Toward a Less Harmful Cigarette: A Workshop Held at the World Conference on Smoking and Health, Sept. 11-13, 1967. Nat. Cancer Institute, 1968.
Warning: These citations may not always be 100% accurate.