{{cite journal | last1=Ismael | first1=H. | author2=R. Djedović | author3=V. Bogdanović | author4=D. Stanojević | author5=S. Trivunović | author6=D. Janković | author7=T. Stamenić | year=2022 | title=GENETIC AND PHENOTYPIC TRENDS FOR UDDER TRAITS AND ANGULARITY OF HOLSTEIN FRIESIAN COWS | journal=Journal of Animal and Plant Sciences | volume=32 | issue=5 | pages=1176-1184 | doi=10.36899/JAPS.2022.5.0523 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=AS-20-0101}}