APA način citiranja

Castilla, H., Caycho, T., & Ventura-León, J. L. (2016). Happiness Differences by Sex and Age in Peruvian University.

Čikaški stil citiranja

Castilla, Humberto, Tomás Caycho, i José Luís Ventura-León. Happiness Differences By Sex and Age in Peruvian University. 2016.

MLA način citiranja

Castilla, Humberto, Tomás Caycho, i José Luís Ventura-León. Happiness Differences By Sex and Age in Peruvian University. 2016.

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