{{cite journal | last1=Shtaya1 | first1=M. J. Y. | author2=J. M. Abdallah | year=2021 | title=ASSESSMENT OF PHENOTYPIC DIVERSITY OF BARLEY GENOTYPES THROUGH CLUSTER AND PRINCIPAL COMPONENT ANALYSES | journal=Journal of Animal and Plant Sciences | volume=31 | issue=5 | pages=1345-1351 | doi=10.36899/JAPS.2021.5.0336 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=AG-20-0110}}