Álvarez Ulloa, L. C. (2020). Effects during the COVID-19 pandemic, in the mental health. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Álvarez Ulloa, Luisa Cristina. Effects During the COVID-19 Pandemic, in the Mental Health. Universidad Pedagógica y Tecnológica de Colombia, 2020.
MLA način citiranja (9. izdanje)Álvarez Ulloa, Luisa Cristina. Effects During the COVID-19 Pandemic, in the Mental Health. Universidad Pedagógica y Tecnológica de Colombia, 2020.
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