APA (7th ed.) Citation

D' Adamo, P. J., & Whitney, C. (2003). Eat right 4 blood type O: Individual food, drink and supplement lists. Penguin Books.

Chicago Style (17th ed.) Citation

D' Adamo, Peter J., and Catherine Whitney. Eat Right 4 Blood Type O: Individual Food, Drink and Supplement Lists. London: Penguin Books, 2003.

MLA (9th ed.) Citation

D' Adamo, Peter J., and Catherine Whitney. Eat Right 4 Blood Type O: Individual Food, Drink and Supplement Lists. Penguin Books, 2003.