APA (7th ed.) Citation

Macdonald, F., & Bergin, M. (2005). How to be a medieval knight. National Geographic Society.

Chicago Style (17th ed.) Citation

Macdonald, Fiona, and Mark Bergin. How to Be a Medieval Knight. Washington, D.C.: National Geographic Society, 2005.

MLA (8th ed.) Citation

Macdonald, Fiona, and Mark Bergin. How to Be a Medieval Knight. National Geographic Society, 2005.

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