APA-referens

Valverde, R. (2013). Availability, distribution, quality and perspectives of water in Costa Rica.

Chicago-stil citat

Valverde, Ricardo. Availability, Distribution, Quality and Perspectives of Water in Costa Rica. 2013.

MLA-referens

Valverde, Ricardo. Availability, Distribution, Quality and Perspectives of Water in Costa Rica. 2013.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.