{{cite journal | last1=Akesowan | first1=A. | author2=A. Choonhahirun | year=2013 | title=EFFECT OF ENZYME TREATMENT ON GUAVA JUICE PRODUCTION USING RESPONSE SURFACE METHODOLOGY | journal=Journal of Animal and Plant Sciences | volume=23 | issue=1 | pages=114-120 | issn=1018-7081 | eissn=2309-8694 | publisher=Pakistan Agricultural Scientists Forum | url=https://thejaps.org.pk/AbstractView.aspx?mid=2013-JAPS-118}}