APA (7th ed.) Zitazioa

Maps.com (Firm) & ebrary, Inc. (2000). Possible migration routes of the first Americans. Maps.com.

Chicago Style (17th ed.) Zitazioa

Maps.com (Firm) eta Inc ebrary. Possible Migration Routes of the First Americans. [S.l.]: Maps.com, 2000.

MLA (9th ed.) Zitazioa

Maps.com (Firm) eta Inc ebrary. Possible Migration Routes of the First Americans. Maps.com, 2000.