Cita APA

Sawyer, J. O., & Lindsey, A. A. (1971). Vegetation of the life zones in Costa Rica. Indianapolis: Indiana Academy of Science.

Citación estilo Chicago

Sawyer, John O., y Alton A. Lindsey. Vegetation of the Life Zones in Costa Rica. Indianapolis: Indiana Academy of Science, 1971.

Cita MLA

Sawyer, John O., y Alton A. Lindsey. Vegetation of the Life Zones in Costa Rica. Indianapolis: Indiana Academy of Science, 1971.