APA (7th ed.) Citation

Willard, E. (2006). Theory of Circulation by Respiration: Synopsis of its Principles and History. Project Gutenberg.

Chicago Style (17th ed.) Citation

Willard, Emma. Theory of Circulation by Respiration: Synopsis of Its Principles and History. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Willard, Emma. Theory of Circulation by Respiration: Synopsis of Its Principles and History. Project Gutenberg, 2006.

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