APA

(2001). A biological assessment of the aquatic ecosystems of the río Paraguay Basin, Alto Paraguay, Paraguay. Washington, DC: Conservation International.

Chicago

2001. A biological assessment of the aquatic ecosystems of the río Paraguay Basin, Alto Paraguay, Paraguay. Washington, DC: Conservation International.

Harvard

(2001). A biological assessment of the aquatic ecosystems of the río Paraguay Basin, Alto Paraguay, Paraguay. Washington, DC: Conservation International.

MLA

A biological assessment of the aquatic ecosystems of the río Paraguay Basin, Alto Paraguay, Paraguay. Washington, DC: Conservation International. 2001.