Gibran, Muhammad Khalil, and Rd Siti Sofro Sidiq. “Dramaturgi Profesi Barista Tangkelekopi Dan Serotonin Pekanbaru”. AR-RUMMAN: Journal of Education and Learning Evaluation, vol. 2, no. 1, June 2025, pp. 206-13, doi:10.57235/arrumman.v2i1.6421.