Ramadan, R., and R. Santoso. “PENGARUH SOCIAL MEDIA MARKETING, ELECTRONIC WORD OF MOUTH, DAN PRODUCT QUALITY TERHADAP PURCHASE DECISION PADA SEPEDA MOTOR BEKAS DI SHOWROOM SAS MOTOR SURABAYA”. GEMAH RIPAH: Jurnal Bisnis, vol. 5, no. 04, Dec. 2025, pp. 119-30, doi:10.69957/grjb.v5i04.2510.