APA (7th ed.) Citation

Williams, A. R., & Hiebert, F. T. (2021). Lost cities, ancient tombs: 100 discoveries that changed the world. National Geographic.

Chicago Style (17th ed.) Citation

Williams, Ann R., and Fredrik T. Hiebert. Lost Cities, Ancient Tombs: 100 Discoveries That Changed the World. Washington, D.C.: National Geographic, 2021.

MLA (9th ed.) Citation

Williams, Ann R., and Fredrik T. Hiebert. Lost Cities, Ancient Tombs: 100 Discoveries That Changed the World. National Geographic, 2021.

Warning: These citations may not always be 100% accurate.