APA (7th ed.) Citation

Holdridge, L. R. (1971). Forest environments in tropical life zones: A pilot study. Pergamon Press.

Chicago Style (17th ed.) Citation

Holdridge, L. R. Forest Environments in Tropical Life Zones: A Pilot Study. Oxford: Pergamon Press, 1971.

MLA (9th ed.) Citation

Holdridge, L. R. Forest Environments in Tropical Life Zones: A Pilot Study. Pergamon Press, 1971.

Warning: These citations may not always be 100% accurate.