APA (7th ed.) Citation

Speed, H. (2004). The practice and science of drawing by Harold Speed. Project Gutenberg Literary Archive Foundation.

Chicago Style (17th ed.) Citation

Speed, Harold. The Practice and Science of Drawing by Harold Speed. Salt Lake City: Project Gutenberg Literary Archive Foundation, 2004.

MLA (9th ed.) Citation

Speed, Harold. The Practice and Science of Drawing by Harold Speed. Project Gutenberg Literary Archive Foundation, 2004.

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