Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Jack John G. (1898). Pikes peak, plum creek and South platte. U. S. Geological Survey.
Chicago Style (17th ed.) Zitazioa
Jack John G. Pikes Peak, Plum Creek and South Platte. U. S. Geological Survey, 1898.
MLA (9th ed.) Zitazioa
Jack John G. Pikes Peak, Plum Creek and South Platte. U. S. Geological Survey, 1898.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.