Cita APA

Calvo, G., & Somarriba, E. (1999). Timber species for shade in new and old cocoa fields.

Chicago Style Citation

Calvo, G., i Eduardo Somarriba. Timber Species for Shade in New and Old Cocoa Fields. 1999.

Cita MLA

Calvo, G., i Eduardo Somarriba. Timber Species for Shade in New and Old Cocoa Fields. 1999.

Atenció: Aquestes cites poden no estar 100% correctes.