APA (7th ed.) Citation

Gregory, J. (1938). A B C of the vitamins: A survey in charts. The Williams & Wilkins company.

Chicago Style (17th ed.) Citation

Gregory, Jennie. A B C of the Vitamins: A Survey in Charts. Baltimore: The Williams & Wilkins company, 1938.

MLA (8th ed.) Citation

Gregory, Jennie. A B C of the Vitamins: A Survey in Charts. The Williams & Wilkins company, 1938.