{{cite journal | last1=Niamatullah | first1=M. | author2=M. Khan | author3=M. Q. Khan | author4=M. Sadiq | author5=K. U. Zaman | author6=C.S. Hayat | author7=S. Rehman | year=2011 | title=IMPACT OF NPK APPLICATIONS ON THE NUMBER OF PRODUCTIVE TILLERS AND COST BENEFIT ANALYSIS OF WHEAT IN HILL–TORRENT IRRIGATED AREA OF
D. I. KHAN DIVISION, KHYBER PAKHTOONKHWA | journal=Journal of Animal and Plant Sciences | volume=21 | issue=2 | pages=211-214 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2011-JAPS-205}}