APA (7th ed.) Citation

Walter, P., Brubacher, G. B., & Stähelin, H. (1989). Elevated dosages of vitamins: Benefits and hazards. Hans Huber Publishers.

Chicago Style (17th ed.) Citation

Walter, Paul, G. B. Brubacher, and Hannes Stähelin. Elevated Dosages of Vitamins: Benefits and Hazards. Toronto ; Lewiston, N.Y.: Hans Huber Publishers, 1989.

MLA (9th ed.) Citation

Walter, Paul, et al. Elevated Dosages of Vitamins: Benefits and Hazards. Hans Huber Publishers, 1989.