Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Little Jr. Elbert L. Atlas of United States trees. U.S. Department of Agriculture.
Chicago Style (17th ed.) Zitazioa
Little Jr. Elbert L. Atlas of United States Trees. U.S. Department of Agriculture.
MLA (9th ed.) Zitazioa
Little Jr. Elbert L. Atlas of United States Trees. U.S. Department of Agriculture.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.