Tampubolon, Herikson. “INFLUENCE OF THE MIX OF PRICE, PLACE, PROCESS ON GUEST SATISFACTION OF GRAND ORRI BERASTAGI HOTEL IN 2021”. International Journal of Economic, Technology and Social Sciences (Injects) 2, no. 1 (May 9, 2021): 93–101. Accessed August 24, 2025. https://jurnal.ceredindonesia.or.id/index.php/injects/article/view/243.