{{cite journal | last1=Khan | first1=M. A. | author2=M.S. Khan | year=2015 | title=NON-GENETIC FACTORS AFFECTING LINEAR TYPE TRAITS IN SAHIWAL COWS | journal=Journal of Animal and Plant Sciences | volume=25 | issue=1 | pages=29-36 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-05}}