Citazione Stile APA (7a Edizione)

Willan, R. L. (1985). A guide to forest seed handling: With special reference to the Tropics. FAO.

Citazione stile Chigago Style (17a edizione)

Willan, R. L. A Guide to Forest Seed Handling: With Special Reference to the Tropics. Rome: FAO, 1985.

Citatione MLA (9a ed.)

Willan, R. L. A Guide to Forest Seed Handling: With Special Reference to the Tropics. FAO, 1985.