{{cite journal | last1=Adinya | first1=I. B. | author2=S. M. Afu | author3=J.U. Ijoma | year=2010 | title=ECONOMIC MELT DOWN AND DECLINE IN PINEAPPLE PRODUCTION: DETERMINANT OF PRODUCTION INEFFICIENCY OF PINEAPPLE-BASED ALLEY CROPPING PRACTICES IN CROSS RIVER STATE, NIGERIA | journal=Journal of Animal and Plant Sciences | volume=20 | issue=2 | pages=107-116 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2010-JAPS-202}}