Alarcon, J. A. (2022). Mental Loneliness is a Massive Problem for People. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Alarcon, Julián Andres. Mental Loneliness Is a Massive Problem for People. Universidad Pedagógica y Tecnológica de Colombia, 2022.
MLA način citiranja (9. izdanje)Alarcon, Julián Andres. Mental Loneliness Is a Massive Problem for People. Universidad Pedagógica y Tecnológica de Colombia, 2022.
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