{{cite journal | last1=Ertek | first1=N. | author2=A. Keskin | year=2019 | title=AN ENTERPRISE LEVEL ANALYSIS OF THE FACTORS AFFECTING BEEF PRODUCTION | journal=Journal of Animal and Plant Sciences | volume=29 | issue=2 | pages=578-584 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2019-JAPS-229}}