{{cite journal | last1=Hendricrianto | first1=Benny | author2=Kurniawan Sigit Wicaksono | author3=Syahrul Kurniawan | year=2026 | title=SOIL CHEMICAL VARIATION AFFECT RUBBER PRODUCTIVITY IN STATE ENTREPRISES PLANTATION | journal=Journal of Animal and Plant Sciences | volume=36 | issue=5 | doi=10.36899/JAPS.2026.5.0111 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2026-JAPS-97}}