GINTU, Agung R; FANGGIDAE, Glory P. V.; DE FRETES, Christian H. J; PUSPITA, Dhanang. Peel Off Face Masker from Coffee Grounds-Chitosan. Nusantara Science and Technology Proceedings, Malang, Indonesia, p. 56–66, 2023. DOI: 10.11594/nstp.2023.3508. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/1026. Acesso em: 19 jul. 2025.