แหล่งที่มา WikiPedia: วงศ์มังคุด http://www.ib.unicamp.br/profs/volker/chaves/Gutti... http://delta-intkey.com http://delta-intkey.com/angio/ http://delta-intkey.com/angio/www/guttifer.htm //doi.org/10.1086%2F342521 //www.jstor.org/stable/3080291
