Z. Efdison, R. Efridozel, D. Yadewani, A. N. Lova, and E. F. Harahap, “The Influence of Shopee’s Brand Ambassador and ‘Free Shipping’ Tagline on Purchase Decisions by STIE Sakti Alam Kerinci Students”, TOFEDU, vol. 4, no. 7, pp. 3504–3515, Sep. 2025.