APA (7th ed.) Citation

Griggs, R. F. (1922). The Valley of Ten Thousand Smokes. The National geographic society.

Chicago Style (17th ed.) Citation

Griggs, Robert F. The Valley of Ten Thousand Smokes. Washington: The National geographic society, 1922.

MLA (9th ed.) Citation

Griggs, Robert F. The Valley of Ten Thousand Smokes. The National geographic society, 1922.

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