Cita APA (7th ed.)

Gerrard, M. (2009). National Geographic traveler: Greece (Third edition.). National Geographic Society.

Cita Chicago (17th ed.)

Gerrard, Mike. National Geographic Traveler: Greece. Third edition. Washington, D.C: National Geographic Society, 2009.

Cita MLA (9th ed.)

Gerrard, Mike. National Geographic Traveler: Greece. Third edition. National Geographic Society, 2009.