APA (7th ed.) Citation

Tappan, E. M. (2010). The Little Book of the Flag. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tappan, Eva March. The Little Book of the Flag. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Tappan, Eva March. The Little Book of the Flag. Project Gutenberg, 2010.

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