{{cite journal | last1=Offem | first1=B. O. | author2=Y. A.Samsons | author3=I. T. Omoniyi | year=2009 | title=TROPHIC ECOLOGY OF COMMERCIALLY IMPORTANT FISHES IN THE CROSS RIVER, NIGERIA | journal=Journal of Animal and Plant Sciences | volume=19 | issue=1 | pages=37-44 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2009-JAPS-113}}