{{cite journal | last1=Ahmad | first1=M. D. | author2=R. A. Hashmi | author3=A. A. Anjum | author4=A. Hanif | author5=R. H. Ratyal | year=2009 | title=DRINKING WATER QUALITY BY THE USE OF CONGO RED MEDIUM TO DIFFERENTIATE BETWEEN PATHOGENIC AND NON PATHOGENIC E. coli AT POULTRY FARMS | journal=Journal of Animal and Plant Sciences | volume=19 | issue=2 | pages=108-110 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2009-JAPS-215}}