Não informado. (1973). Forest genetic resources information. Food and Agriculture Organization of the United Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Forest Genetic Resources Information. Rome: Food and Agriculture Organization of the United Nations, 1973.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Forest Genetic Resources Information. Food and Agriculture Organization of the United Nations, 1973.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.