{{cite journal | last1=Irfan | first1=M. | author2=G. Jan | author3=F. G. Jan | author4=W. Murad | year=2021 | title=FLORISTIC DIVERSITY AND CHOROTYPE ANALYSIS OF THE PTERIDOPHYTES OF PAKISTAN | journal=Journal of Animal and Plant Sciences | volume=32 | issue=1 | pages=10 | doi=10.36899/JAPS.2022.1.0395 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=AG-20-0193}}