{{cite journal | last1=Khan | first1=M. A. | author2=M. Iqbal | author3=A. Ghaffar | author4=M. Akhtar | year=2009 | title=PROAMPHIBOS (BOVINI, BOVIDAE, MAMMALIA) FROM THE TATROT FORMATION IN THE UPPER SIWALIKS OF PAKISTAN | journal=Journal of Animal and Plant Sciences | volume=19 | issue=2 | pages=104-107 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2009-JAPS-211}}