APA-referens (7:e uppl.)

Não informado. Tropical woods. Yale University, School of Forestry.

Chicago-referens (17:e uppl.)

Não informado. Tropical Woods. New Haven, Conn: Yale University, School of Forestry.

MLA-referens (8:e uppl.)

Não informado. Tropical Woods. Yale University, School of Forestry.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.