APA (7th ed.) Citation

Apperson, G. L. (2006). The Social History of Smoking. Project Gutenberg.

Chicago Style (17th ed.) Citation

Apperson, George Latimer. The Social History of Smoking. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Apperson, George Latimer. The Social History of Smoking. Project Gutenberg, 2006.

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