APA (7th ed.) Citation

Fagan, B. M. (1997). Into the unknown: Solving ancient mysteries. National Geographic Society.

Chicago Style (17th ed.) Citation

Fagan, Brian M. Into the Unknown: Solving Ancient Mysteries. Washington D.C.: National Geographic Society, 1997.

MLA (9th ed.) Citation

Fagan, Brian M. Into the Unknown: Solving Ancient Mysteries. National Geographic Society, 1997.