Gaya APA

Vergara, N, T., Macdicken, K, G. (1990). Agroforestry : Classification and management . America: A Wiley -Interscience Publication.

Gaya MLA

Vergara, Napoleon, T.., Macdicken, Kenneth, G.. "Agroforestry : Classification and management". America: A Wiley -Interscience Publication, 1990. Text.