APA (7th ed.) Citation

Gregg, E. C. (2009). How to Tie Flies. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gregg, Ellery Clark. How to Tie Flies. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Gregg, Ellery Clark. How to Tie Flies. Project Gutenberg, 2009.

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