William Howard Hay (English Wikipedia)

Gilman, Goldwin Smith Professor of Human Studies Sander L.; Gilman, Sander L. (2008-01-23). Diets and Dieting: A Cultural Encyclopedia. Routledge. ISBN 9781135870683.
Clendening, Logan. (1936). The Balanced Diet. D. Appleton-Century Company. p. 159

books.google.com

Hay, William Howard (1932-01-01). Health Via Food.
Hay, William H. (1993-04-01). The Medical Millennium. Health Research Books. ISBN 9780787303860.
Columbia, United States Congress House Committee on the District of (1946-01-01). Prohibit Vivisection in the District of Columbia: Hearings Before the Committee on the District of Columbia, House of Representatives, Seventy-ninth Congress, Second Session, on H.R. 5572, a Bill to Prohibit Experiments on Living Dogs in the District of Columbia. U.S. Government Printing Office.
McBean, Eleanor (1993-04-01). The Poisoned Needle. Health Research Books. ISBN 9780787305949.
Foxcroft, Louise (2012-01-05). Calories and Corsets: A history of dieting over two thousand years. Profile Books. ISBN 978-1847654588.
Habgood, Jackie (2011-01-02). The Hay Diet Made Easy: A Practical Guide to Food Combining. Souvenir Press. ISBN 9780285639126.

"Bureau of Investigation. William Howard Hay. Capitalizing Food Fads and Fantasies". Journal of the American Medical Association. 100 (8): 595. 1933. doi:10.1001/jama.1933.02740080059028.
"William Howard Hay". Journal of the American Medical Association. 106 (1): 63. 1936-01-04. doi:10.1001/jama.1936.02770010021053. ISSN 0002-9955.

"Sun Diet Sanatorium | Dharma Talks". neozen888.wordpress.com. Retrieved 2016-07-23.

"Address of William Howard Hay, MD". International Medical Council on Vaccination. Retrieved 2016-07-23.

"William Howard Hay". Journal of the American Medical Association. 106 (1): 63. 1936-01-04. doi:10.1001/jama.1936.02770010021053. ISSN 0002-9955.