Guallpa Guallpa, M. P., & Ochoa Encalada, S. C. (2019). Cornish: Suicide behaviors in the teens of the tenth grade of basic education. Corporación Universitaria Americana.
Čikaški stil citiranja (17. izdanje)Guallpa Guallpa, Milton Patricio, i Sergio Constantino Ochoa Encalada. Cornish: Suicide Behaviors in the Teens of the Tenth Grade of Basic Education. Corporación Universitaria Americana, 2019.
MLA način citiranja (8. izdanje)Guallpa Guallpa, Milton Patricio, i Sergio Constantino Ochoa Encalada. Cornish: Suicide Behaviors in the Teens of the Tenth Grade of Basic Education. Corporación Universitaria Americana, 2019.
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