RS, A., GM, C., IP, R., D, B., IH, B., & AL, W. (1991). Zinc, copper, iron and calcium concentrations in bitch milk. The Journal of nutrition, 121(11 Suppl), S81. https://doi.org/10.1093/jn/121.suppl_11.S81
Chicago Style (17th ed.) CitationRS, Anderson, Carlos GM, Robinson IP, Booles D, Burger IH, and Whyte AL. "Zinc, Copper, Iron and Calcium Concentrations in Bitch Milk." The Journal of Nutrition 121, no. 11 Suppl (1991): S81. https://doi.org/10.1093/jn/121.suppl_11.S81.
MLA (9th ed.) CitationRS, Anderson, et al. "Zinc, Copper, Iron and Calcium Concentrations in Bitch Milk." The Journal of Nutrition, vol. 121, no. 11 Suppl, 1991, p. S81, https://doi.org/10.1093/jn/121.suppl_11.S81.
Warning: These citations may not always be 100% accurate.