Dokumentuaren aipamena

APA (7th ed.) Zitazioa
Estados Unidos Coast and Geodetic Survey & Andrew B. Graham Photo Litho. (1903). General progress sketch. U. S. Coast and Geodetic Survey.
Chicago Style (17th ed.) Zitazioa
Estados Unidos Coast and Geodetic Survey eta Andrew B. Graham Photo Litho. General Progress Sketch. U. S. Coast and Geodetic Survey, 1903.
MLA (9th ed.) Zitazioa
Estados Unidos Coast and Geodetic Survey eta Andrew B. Graham Photo Litho. General Progress Sketch. U. S. Coast and Geodetic Survey, 1903.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.