APA (7th ed.) Citation

Callahan, H. M. (2007). Nature. Steidl.

Chicago Style (17th ed.) Citation

Callahan, Harry M. Nature. Gö̤ttingen: Steidl, 2007.

MLA (9th ed.) Citation

Callahan, Harry M. Nature. Steidl, 2007.

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