{{cite journal | last1=Aytekin | first1=İ. | author2=S. Boztepe | year=2013 | title=ASSOCIATIONS OF PIT-1 GENE POLYMORPHISM WITH MILK YIELD AND COMPOSITION TRAITS IN BROWN SWISS CATTLE | journal=Journal of Animal and Plant Sciences | volume=23 | issue=5 | pages=1281-1289 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2013-JAPS-511}}