{{cite journal | last1=Ullah | first1=A. | author2=K. William | author3=A. Rehman | author4=S. W. Khan | author5=Z. Iqbal | year=2015 | title=BIOLOGICAL EVALUATION, CHARACTERIZATION AND DISTRIBUTION OF SOME LICHENS OF HIMALAYAN REGION, PAKISTAN | journal=Journal of Animal and Plant Sciences | volume=25 | issue=3 | pages=314-320 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-649}}