{{cite journal | last1=Elhendy | first1=A. M. | author2=S. H. Alkahtani | year=2012 | title=EFFICIENCY AND PRODUCTIVITY CHANGE ESTIMATION OF TRADITIONAL FISHERY SECTOR AT THE ARABIAN GULF: THE MALMQUIST PRODUCTIVITY INDEX APPROACH | journal=Journal of Animal and Plant Sciences | volume=22 | issue=2 | pages=300-308 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2012-JAPS-211}}