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Guenthner et al., 1973. Poult. Sci., 52 (5): 1787-1798

Document reference 
Guenthner, E. ; Carlson, C. W. ; Olson, O. E. ; Kohler, G. O. ; Livingstone; A. L., 1973. Pigmentation of egg yolks by xanthophylls from corn, marigold, alfalfa and synthetic sources. Poult. Sci., 52 (5): 1787-1798
Citation key 
Guenthner et al., 1973