{{cite journal | last1=Opata | author2=Patience. Ifeyinwa | year=2018 | title=DETERMINANTS OF THE CHOICE OF MARKETING CHANNEL AMONG COCOYAM FARMERS IN SOUTH EAST NIGERIA | journal=Journal of Animal and Plant Sciences | volume=28 | issue=4 | pages=1142-1151 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2018-JAPS-425}}