{{cite journal | last1=Gugołek | first1=A. | author2=T. Wyczling | author3=J. Strychalski | author4=D. Kowalska | author5=M. Konstantynowicz | author6=C. Zwoliński | year=2017 | title=EFFECT OF DIETS WITH HIGH METHIONINE LEVELS ON GROWTH PERFORMANCE, HEALTH STATUS, NUTRIENT DIGESTIBILITY AND NITROGEN RETENTION IN ARCTIC FOXES | journal=Journal of Animal and Plant Sciences | volume=27 | issue=6 | pages=1743-1749 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2017-JAPS-221}}