APA-referens

Ulate Montero, J., Valerio Villalobos, J., & Portúguez Sánchez, Y. (2008). Specialized bibliography of the central canton of the province of Heredia, Costa Rica, 1824-2003.

Chicago-stil citat

Ulate Montero, Jenny, Jorlenny Valerio Villalobos, och Yadira Portúguez Sánchez. Specialized Bibliography of the Central Canton of the Province of Heredia, Costa Rica, 1824-2003. 2008.

MLA-referens

Ulate Montero, Jenny, Jorlenny Valerio Villalobos, och Yadira Portúguez Sánchez. Specialized Bibliography of the Central Canton of the Province of Heredia, Costa Rica, 1824-2003. 2008.

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