Cita APA

Graham, G. (1996). Nitrate attenuation beneath two coffee plantations in the Central Valley of Costa Rica. Ontario, Canada.

Citación estilo Chicago

Graham, Gwyn. Nitrate Attenuation Beneath Two Coffee Plantations in the Central Valley of Costa Rica. Ontario, Canada, 1996.

Cita MLA

Graham, Gwyn. Nitrate Attenuation Beneath Two Coffee Plantations in the Central Valley of Costa Rica. Ontario, Canada, 1996.