APA-referens

Ramírez, P., & Arias, M. (2011). Urban Zoning Guidelines for the Management and Protection of Underground Water of the Birris River Watershed (Cartago).

Chicago-stil citat

Ramírez, Pablo, och Mario Arias. Urban Zoning Guidelines for the Management and Protection of Underground Water of the Birris River Watershed (Cartago). 2011.

MLA-referens

Ramírez, Pablo, och Mario Arias. Urban Zoning Guidelines for the Management and Protection of Underground Water of the Birris River Watershed (Cartago). 2011.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.