{{cite journal | last1=Shehzad | first1=A. | author2=K. M. Anjum | author3=A. Yaqub | author4=S. Zahid | author5=M. Z. Yousaf | author6=N. Khan | author7=M. Yaseen | author8=A. Habib | year=2022 | title=ESTIMATION OF METAL CONTENT IN AVIAN FAUNA OF SIALKOT, PAKISTAN USING FEATHERS AS BIO-INDICATOR | journal=Journal of Animal and Plant Sciences | volume=32 | issue=5 | pages=1460-1468 | doi=10.36899/JAPS.2022.5.0552 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=ZLG-20-0010}}