S. Ahzan, D. Darminto, F. A. A. Nugroho, and S. Prayogi, “Synthesis and Characterization of ZnO Thin Layers using Sol-Gel Spin Coating Method”, J. Penelit. dan. Pengkaj. Ilmu. Pendidik. e-Saintika, vol. 5, no. 2, pp. 182–194, Jul. 2021, doi: 10.36312/esaintika.v5i2.506.