{{cite journal | last1=Yilmaz | first1=I. | author2=E. Eyduran | author3=A. Kaygisiz | year=2010 | title=DETERMINATION OF SOME ENVIRONMENTAL FACTORS RELATED TO SEX RATIO OF BROWN SWISS CALVES | journal=Journal of Animal and Plant Sciences | volume=20 | issue=3 | pages=164-169 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2010-JAPS-304}}