Palupi E, Jayanegara A, Ploeger A, Kahl J (November 2012). "Comparison of nutritional quality between conventional and organic dairy products: a meta-analysis". J. Sci. Food Agric. 92 (14): 2774–81. doi:10.1002/jsfa.5639. PMID22430502.
Palupi E, Jayanegara A, Ploeger A, Kahl J (November 2012). "Comparison of nutritional quality between conventional and organic dairy products: a meta-analysis". J. Sci. Food Agric. 92 (14): 2774–81. doi:10.1002/jsfa.5639. PMID22430502.