Cita APA

Janzen, D. H. (1977). Use of Santa Rosa National Park and Corcovado National Park, Costa Rica, by biologists. [S.l]: Pennsylvania.

Citación estilo Chicago

Janzen, Daniel H. Use of Santa Rosa National Park and Corcovado National Park, Costa Rica, By Biologists. [S.l]: Pennsylvania, 1977.

Cita MLA

Janzen, Daniel H. Use of Santa Rosa National Park and Corcovado National Park, Costa Rica, By Biologists. [S.l]: Pennsylvania, 1977.

Precaución: Estas citas no son 100% exactas.