Não informado. (1986). Abstracts on Rural Development in the Tropics. Royal Tropical Institute.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Abstracts on Rural Development in the Tropics. Amsterdam: Royal Tropical Institute, 1986.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Abstracts on Rural Development in the Tropics. Royal Tropical Institute, 1986.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.