Z. . Muhamad, F. . Zakaria, A. . Indarwaty, and H. . Anastasia, “Behind the Knowledge and Attitude: Female Adolescent in Looking at Physical Appearance Change during Puberty at SMPN 1 Telaga Biru Gorontalo”, JCHP, vol. 1, no. 1, pp. 1-8, Feb. 2021.