{{cite journal | last1=Gulshan | first1=T. | author2=Z. Ali | author3=Z. Zona | author4=B. Ansari | author5=M. Ahmad | author6=I. Zainab | author7=Z. A. Nasir | author8=I. Colbeck | year=2015 | title=STATE OF AIR QUALITY IN AND OUTSIDE OF HOSPITAL WARDS IN URBAN CENTRES – A CASE STUDY IN LAHORE, PAKISTAN | journal=Journal of Animal and Plant Sciences | volume=25 | issue=3 | pages=399-404 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-661}}