APA (7th ed.) Citation

Davis, F. P. (2011). How to Collect a Doctor Bill. Project Gutenberg.

Chicago Style (17th ed.) Citation

Davis, Frank P. How to Collect a Doctor Bill. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Davis, Frank P. How to Collect a Doctor Bill. Project Gutenberg, 2011.

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