APA (7th ed.) Zitazioa
Maps.com (Firm) & ebrary, Inc. (1997). Ratification of the ERA, as of 1977. Magellan Geographix.
Chicago Style (17th ed.) Zitazioa
Maps.com (Firm) eta Inc ebrary. Ratification of the ERA, as of 1977. [S.l.]: Magellan Geographix, 1997.
MLA (9th ed.) Zitazioa
Maps.com (Firm) eta Inc ebrary. Ratification of the ERA, as of 1977. Magellan Geographix, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.