Department of Agriculture. The Forests of western and central Ecuador: Ecuador supplies the world with balsa.
Citazione stile Chigago Style (17a edizione)Department of Agriculture. The Forests of Western and Central Ecuador: Ecuador Supplies the World with Balsa.
Citatione MLA (8a ed.)Department of Agriculture. The Forests of Western and Central Ecuador: Ecuador Supplies the World with Balsa.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.