{{cite journal | last1=Mughal | first1=SEMEN D. H. | author2=A. Ijaz | author3=M. S. Yousaf | author4=H. Rehman | author5=M. Aleem | author6=H. Zaneb | author7=F. Wadood | year=2013 | title=ASSESSMENT OF OPTIMAL OSMOTIC PRESSURE OF CITRATE EGG YOLK EXTENDER FOR CRYOPRESERVATION OF BUFFALO BULL (B UBALUS BUBALIS) | journal=Journal of Animal and Plant Sciences | volume=23 | issue=4 | pages=964-968 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2013-JAPS-403}}