APA (7th ed.) Citation

Chas. Pfizer & Co. (1963). Vitamin A. C. Pfizer.

Chicago Style (17th ed.) Citation

Chas. Pfizer & Co. Vitamin A. New York: C. Pfizer, 1963.

MLA (9th ed.) Citation

Chas. Pfizer & Co. Vitamin A. C. Pfizer, 1963.

Warning: These citations may not always be 100% accurate.