Martino, F., Brooks, R., Browne, J., Carah, N., Zorbas, C., Corben, K., Saleeba, E., Martin, J., Peeters, A., & Backholer, K. (2021). The Nature and Extent of Online Marketing by Big Food and Big Alcohol During the COVID-19 Pandemic in Australia: Content Analysis Study. JMIR Public Health and Surveillance, 7.
Wulandari, T. (2021). The Use of WhatsApp Business as an Online Marketing Communication Media for Beauty Brands During the Covid- 19 Pandemic in Indonesia.