Rahmawati, I., and F. Tari. “STUDI LOYALITAS MEREK SKINCARE SERUM WARDAH (STUDI KASUS PADA MAHASISWA UNIVERSITAS KH. A WAHAB HASBULLAH JOMBANG)”. Jurnal Ilmiah Hospitality, Vol. 10, no. 1, July 2021, pp. 113-8, doi:10.47492/jih.v10i1.729.