Guntarayana, I., and A. Fauziah. “BUSINESS STRATEGY FOR CAFE DEVELOPMENT: (A Study on De Classe Gelato & Coffe Blitar City)”. JOSAR (Journal of Students Academic Research), Vol. 4, no. 2, Sept. 2019, pp. 101-9, doi:10.35457/josar.v4i2.1073.