{{cite journal | last1=Ibrahim | first1=M. | author2=N. Nazar | author3=M. Ilyas | author4=T. Mahmood | year=2014 | title=ASSESSMENT OF GENETIC VARIABILITY AMONG SELECTED SPECIES OF APOCYNACEAE ON THE BASIS OF rps 11 GENE | journal=Journal of Animal and Plant Sciences | volume=24 | issue=4 | pages=1266-1269 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2014-JAPS-183}}