APA (7th ed.) Citation

Kountouras, J., Tzitiridou-Chatzopoulou, M., Papaefthymiou, A., Chatzopoulos, D., & Doulberis, M. (2023). COVID-19 mRNA Vaccine Effectiveness against Elderly Frail People. MDPI AG.

Chicago Style (17th ed.) Citation

Kountouras, Jannis, Maria Tzitiridou-Chatzopoulou, Apostolis Papaefthymiou, Dimitrios Chatzopoulos, and Michael Doulberis. COVID-19 MRNA Vaccine Effectiveness Against Elderly Frail People. MDPI AG, 2023.

MLA (9th ed.) Citation

Kountouras, Jannis, et al. COVID-19 MRNA Vaccine Effectiveness Against Elderly Frail People. MDPI AG, 2023.