APA (7th ed.) Zitazioa
Committee on polar research. National research council. (1970). Polar Research: A survey. Nat. Acad. of Sciences.
Chicago Style (17th ed.) Zitazioa
Committee on polar research. National research council. Polar Research: A Survey. Washington: Nat. Acad. of Sciences, 1970.
MLA (9th ed.) Zitazioa
Committee on polar research. National research council. Polar Research: A Survey. Nat. Acad. of Sciences, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.