Saifudin, M. V., M. Yani, and L. Indayani. “Influence of Viral Marketing, Celebrity Endorsement, and Brand Awareness on Purchase Decision of Specs in Sidoarjo”. Airlangga Journal of Innovation Management, vol. 6, no. 2, June 2025, pp. 199-18, doi:10.20473/ajim.v6i2.72657.