Harvala, H., Benschop, K. S. M., Berginc, N., Midgley, S., Wolthers, K., Simmonds, P., . . . Network, o. b. o. t. E. H. S. (2021). European Non-Polio Enterovirus Network: Introduction of Hospital-Based Surveillance Network to Understand the True Disease Burden of Non-Polio Enterovirus and Parechovirus Infections in Europe. MDPI AG.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Harvala, Heli, et al. European Non-Polio Enterovirus Network: Introduction of Hospital-Based Surveillance Network to Understand the True Disease Burden of Non-Polio Enterovirus and Parechovirus Infections in Europe. MDPI AG, 2021.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Harvala, Heli, et al. European Non-Polio Enterovirus Network: Introduction of Hospital-Based Surveillance Network to Understand the True Disease Burden of Non-Polio Enterovirus and Parechovirus Infections in Europe. MDPI AG, 2021.