Ningrum, R. A. V.; Sudiarti, T. Penggunaan Aplikasi WhatsApp Untuk Meningkatkan Pengetahuan 1000 HPK Ibu Hamil Pada Masa Pandemi COVID-19 Di Kecamatan Ciomas Kabupaten Bogor : The Use of WhatsApp Application to Increase the Knowledge of the First 1000 Early Days of Life for Pregnant Women During the COVID-19 Pandemic at Ciomas District, Bogor Regency. Media Publ. Promosi Kesehat. Indones 2024, 7, 217-224.