{{cite journal | last1=Mohsin | first1=A. U. | author2=J. Ahmad | author3=A. U. H. Ahmad | author4=R. M. Ikram | author5=K. Mubeen | year=2012 | title=EFFECT OF NITROGEN APPLICATION THROUGH DIFFERENT COMBINATIONS OF UREA AND FARM YARD MANURE ON THE PERFORMANCE OF SPRING MAIZE
(Zea mays L.) | journal=Journal of Animal and Plant Sciences | volume=22 | issue=1 | pages=195-198 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2012-JAPS-111}}