Sembiring, S., and I. . Supriyanto. “Strategi Program Marketing PR PT Coffee Sekawan (Sia Coffee) Dalam Memperkuat Positioning Dan Brand Awareness  ”. Jurnal Public Relations (J-PR), vol. 2, no. 2, Oct. 2021, pp. 137-41, doi:10.31294/jpr.v2i2.494.