Não informado. (1989). Agroforestry Today. International Centre for Research in Agroforestry.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Agroforestry Today. Nairobi: International Centre for Research in Agroforestry, 1989.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Agroforestry Today. International Centre for Research in Agroforestry, 1989.
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