Ming Khosasih, Mikhael, and Laurentia Verina Halim Secapramana. “PENGARUH SOCIAL MEDIA MARKETING ACTIVITIES TERHADAP ATTITUDINAL LOYALTY DAN BEHAVIOURAL LOYALTY PADA KONSUMEN OVO”. Business and Finance Journal, vol. 6, no. 1, Apr. 2021, pp. 39-50, doi:10.33086/bfj.v6i1.1978.