{{cite journal | last1=Akhter | first1=M. | author2=M. Ahmad. M. Ramzan | author3=T. H. Awan | year=2007 | title=KSK 133-A HIGH YIELDING, STIFF STEMMED AND EXTRA LONG GRAIN COARSE RICE VARIETY | journal=Journal of Animal and Plant Sciences | volume=17 | issue=4 | pages=1991-2003 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2007-JAPS-403}}