Cita APA (7th ed.)

Allen, W. (2001). Green Phoenix: Restoring the tropical forests of Guanacaste, Costa Rica. Oxford University Press.

Cita Chicago (17th ed.)

Allen, William. Green Phoenix: Restoring the Tropical Forests of Guanacaste, Costa Rica. Oxford: Oxford University Press, 2001.

Cita MLA (9th ed.)

Allen, William. Green Phoenix: Restoring the Tropical Forests of Guanacaste, Costa Rica. Oxford University Press, 2001.