{{cite journal | last1=Saleem | first1=M. F. | author2=M. S. Randhawa | author3=S. Hussain | author4=M. A. Wahid | author5=S. A. Anjum | year=2009 | title=NITROGEN MANAGEMENT STUDIES IN AUTUMN PLANTED MAIZE (ZEA MAYS L.) HYBRIDS | journal=Journal of Animal and Plant Sciences | volume=19 | issue=3 | pages=140-143 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2009-JAPS-301}}