{{cite journal | last1=Ahmad | first1=S. | author2=M. S. Sajid | author3=2 | author4=M. K. Khan | author5=R. Nadeem | author6=H. M. Rizwan | author7=M. A. Malik | author8=F. Yosuf | year=2020 | title=EFFECT OF TRACE ELEMENT SUPPLEMENTATION ON THE GASTROINTESTINAL PARASITES OF GRAZING SHEEP | journal=Journal of Animal and Plant Sciences | volume=30 | issue=1 | pages=72-80 | doi=10.36899/JAPS.2020.1.0009 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=VS-18-0033}}