{{cite journal | last1=Kamalak | first1=A. | author2=A.I. Atalay | author3=C. O. Ozkan | author4=A. Tatliyer | author5=E. Kaya | year=2011 | title=EFFECT OF ESSENTIAL ORANGE (CITRUS SINENSIS L.) OIL ON RUMEN MICROBIAL FERMENTATION USING IN VITRO GAS PRODUCTION TECHNIQUE | journal=Journal of Animal and Plant Sciences | volume=21 | issue=4 | pages=764-769 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2011-JAPS-422}}