Daley, C.A.; Abbott, A.; Doyle, P.; Nader, G.; and Larson, S. (2004). A literature review of the value-added nutrients found in grass-fed beef products. California State University, Chico (College of Agriculture). [1]Архивная копия от 21 августа 2010 на Wayback Machine Retrieved 2008-03-23{{подст:не АИ}}
Daley, C.A.; Abbott, A.; Doyle, P.; Nader, G.; and Larson, S. (2004). A literature review of the value-added nutrients found in grass-fed beef products. California State University, Chico (College of Agriculture). [1]Архивная копия от 21 августа 2010 на Wayback Machine Retrieved 2008-03-23{{подст:не АИ}}