National Geographic Society (U.S.). (2015). Abroad at home: The 600 best international travel experiences in North America. National Geographic Books.
Chicago-Zitierstil (17. Ausg.)National Geographic Society (U.S.). Abroad at Home: The 600 Best International Travel Experiences in North America. Washington, D.C: National Geographic Books, 2015.
MLA-Zitierstil (9. Ausg.)National Geographic Society (U.S.). Abroad at Home: The 600 Best International Travel Experiences in North America. National Geographic Books, 2015.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.