Halim, Yuniwaty, and Livia Katherina. “KARAKTERISTIK EDIBLE FILM DARI KULIT KOPI ROBUSTA (Coffea Canephora) DAN UMBI PORANG (Amorphophallus Muelleri Blume) [CHARACTERISTICS OF EDIBLE FILM FROM ROBUSTA COFFEE’S SILVER SKIN (Coffea Canephora) AND PORANG TUBER (Amorphophallus Muelleri Blume)]”. FaST : Jurnal Sains Dan Teknologi, vol. 3, no. 1, May 2019, pp. 13-28, https://ojs.uph.edu/index.php/FaSTJST/article/view/1669.