{{cite journal | last1=Mehmood | first1=T. | author2=Z. Ali | author3=N. Noor | author4=S. Sidra | author5=Z.A Nasir | author6=I. Colbeck | year=2015 | title=MEASUREMENT OF NO2 INDOOR AND OUTDOOR CONCENTRATIONS IN SELECTED PUBLIC SCHOOLS OF LAHORE USING PASSIVE SAMPLER | journal=Journal of Animal and Plant Sciences | volume=25 | issue=3 | pages=414-419 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-664}}