APA (7th ed.) Citation

Grace, C. O. (1983). Amazing mysteries of the world. National Geographic Society.

Chicago Style (17th ed.) Citation

Grace, Catherine O'Neill. Amazing Mysteries of the World. Washington, D.C: National Geographic Society, 1983.

MLA (9th ed.) Citation

Grace, Catherine O'Neill. Amazing Mysteries of the World. National Geographic Society, 1983.