{{cite journal | last1=Hussain | first1=Z. | author2=Z. Ali | author3=A. Nemat | author4=S. Ahmad | author5=S. K. Sikander | author6=Kiran Saleem | year=2015 | title=ENCLOSURE SIZE OF ANIMALS OF LAHORE ZOOLOGICAL GARDEN IN COMPARISON OF INTERNATIONAL NORMS | journal=Journal of Animal and Plant Sciences | volume=25 | issue=3 | pages=233-241 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-637}}