N. Maulina, S. Sampurno, N. Andayani, and D. R. Laksmitawati, “Pengaruh Electronic Word of Mouth (e-WOM) dan Brand Image terhadap keputusan pembelian produk Immunomodulator (penelitian di wilayah DKI Jakarta)”, JFI, vol. 11, no. 2, pp. 30–37, Jul. 2019.