D. M. Hariyadi, I. Isnaeni, S. Sudarma, N.-M. K. Shandra, and N. Rosita, “Formulation of Peel-Off Mask Containing Natural Antibacterial: Study on Poly Vinyl Alcohol (PVA) and Virgin Coconut Oil (VCO) Contents: doi.org/10.26538/tjnpr/v5i3.16”, TJNPR, vol. 5, no. 3, pp. 514–518, Mar. 2021.