Lestari, D., and A. Abdurahman. “Designing Coffee Powder Products Through the Application of Quality Function Deployment Methods (Case Study at Small and Medium Enterprises Gusto Coffee)”. Food and Agricultural Sciences : Polije Proceedings Series, vol. 3, no. 1, Dec. 2020, pp. 46-51, https://proceedings.polije.ac.id/index.php/food-science/article/view/174.