APA (7th ed.) Citation

Matthews, B. (2011). A Book About the Theater. Project Gutenberg.

Chicago Style (17th ed.) Citation

Matthews, Brander. A Book About the Theater. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Matthews, Brander. A Book About the Theater. Project Gutenberg, 2011.

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