APA (7th ed.) Citation

Tomecek, S. (2020). Ultimate rockopedia: The most complete rocks & minerals reference ever. National Geographic.

Chicago Style (17th ed.) Citation

Tomecek, Steve. Ultimate Rockopedia: The Most Complete Rocks & Minerals Reference Ever. Washington, D.C.: National Geographic, 2020.

MLA (8th ed.) Citation

Tomecek, Steve. Ultimate Rockopedia: The Most Complete Rocks & Minerals Reference Ever. National Geographic, 2020.

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