APA (7th ed.) Citation

National Geographic & Butler, M. B. (2011). National geographic physical science. National Geographic School Publishing.

Chicago Style (17th ed.) Citation

National Geographic and Malcolm B. Butler. National Geographic Physical Science. Jefferson City, MO: National Geographic School Publishing, 2011.

MLA (9th ed.) Citation

National Geographic and Malcolm B. Butler. National Geographic Physical Science. National Geographic School Publishing, 2011.

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