APA (7th ed.) Citation

Beauregard, G. T. (2007). The First Battle of Bull Run. Project Gutenberg.

Chicago Style (17th ed.) Citation

Beauregard, G. T. The First Battle of Bull Run. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Beauregard, G. T. The First Battle of Bull Run. Project Gutenberg, 2007.

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