APA ציטוט

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

Citación estilo Chicago

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

ציטוט MLA

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