APA-viite

Castillo Calvo, D. A. (2021). Changes in singing classes in the Basic Stage of Music in Turrialba, based on virtualization due to the COVID-19 pandemic in the first semester of 2020.

Chicago-tyylinen lähdeviittaus

Castillo Calvo, Diego Armando. Changes in Singing Classes in the Basic Stage of Music in Turrialba, Based On Virtualization Due to the COVID-19 Pandemic in the First Semester of 2020. 2021.

MLA-viite

Castillo Calvo, Diego Armando. Changes in Singing Classes in the Basic Stage of Music in Turrialba, Based On Virtualization Due to the COVID-19 Pandemic in the First Semester of 2020. 2021.

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