{{cite journal | last1=Iqbal | first1=M. F. | author2=M. A. Sufyan | author3=M. M. Aziz | author4=I. A. Zahid | author5=Qamir-ul-Ghani | author6=S. Aslam | year=2009 | title=EFFICACY OF NITROGEN ON GREEN FODDER YIELD AND QUALITY OF OAT (Avena sativa L.) | journal=Journal of Animal and Plant Sciences | volume=19 | issue=2 | pages=82-84 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2009-JAPS-202}}