Ningtiyas, Meilinda Eka. “THE EFFECT OF THE COMBINATION OF WHATSAPP AND FACEBOOK SOCIAL MEDIA ON KNOWLEDGE MASTERY AND ATTITUDES OF OBESE TEENAGERS IN BALONGPANGGANG DISTRICT, GRESIK REGENCY”. GIZI UNESA 3, no. 1 (March 20, 2023): 206-214. Accessed May 8, 2024. https://ejournal.unesa.ac.id/index.php/GIZIUNESA/article/view/50454.