“Penerapan Konsep 4P (Product, Price, Place, Promotion) Dalam Pengelolaan Toko Kosmetik ‘Dewi Kosmetik’ Di Jl.Kapten Muchtar Lubis, Medan Timur”. Journal of Golden Generation Economic, vol. 1, no. 2, Jan. 2026, pp. 100-9, https://doi.org/10.65244/jggeconomic.v2i1.318.