Etilen luka, aktivitas enzim peroksidase, polifenol oksidase, dan fenil alanin liasepeda irisan mesokarp labu kuning= Wound Ethylene, Activity of Peroxidase, Polyphenol Oxidase, and Phenyl Alanine Amonia Lyase Enzymes - Perpustakaan UGM, i-lib ([Yogyakarta] : Universitas Gadjah Mada, 2006)