{{cite journal | last1=Ozdemir1 | first1=M. | author2=N. Esenbuga | year=2020 | title=ASSOCIATIONS AMONG BETA-LACTOGLOBULIN GENOTYPES AND SOME PRODUCTION TRAITS IN SHEEP: A SYSTEMATIC REVIEW AND META-ANALYSIS | journal=Journal of Animal and Plant Sciences | volume=30 | issue=5 | pages=1092-1097 | doi=10.36899/JAPS.2020.5.0124 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=AS-19-0022}}