{{cite journal | last1=Jahanian | first1=R. | author2=M. A. Edriss | year=2015 | title=METABOLIZABLE ENERGY AND CRUDE PROTEIN REQUIREMENTS OF TWO QUAIL SPECIES (Coturnix japonica and Coturnix ypsilophorus) | journal=Journal of Animal and Plant Sciences | volume=25 | issue=3 | pages=603-611 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2015-JAPS-83}}