{{cite journal | last1=Hussain | first1=M. | author2=S. M. Hussain | author3=M. Afzal | author4=A. Javid | author5=S. Abdullah | author6=S. A. Raza | author7=M. Iqbal | year=2011 | title=EFFECT OF LOW LEVEL OF MINERAL PHOSPHORUS AND MEDIUM LEVEL OF NITROGEN ON PLANKTONIC PRODUCTIVITY AND INCREASE IN FISH PRODUCTION | journal=Journal of Animal and Plant Sciences | volume=21 | issue=4 | pages=642-645 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2011-JAPS-429}}