{{cite journal | last1=Cai | first1=Ai-Ming | author2=Yi-Gang Song | author3=Asad Shabbir | author4=Xin He | author5=Rong Yan | author6=Hui Yan | author7=Lie Xu | author8=Wei He | author9=Zhuo-Wen Zhang | author10=Yong-Jian Wang1 | year=2017 | title=INDIVIDUAL-AND GROUP-BASED INTERSPECIFIC COMPETITION BETWEEN ALIEN INVASIVE PLANT ERIGERON ANNUUS AND TWO CO-EXISTING HERBS | journal=Journal of Animal and Plant Sciences | volume=27 | issue=5 | pages=1629-1636 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2017-JAPS-206}}