APA (7th ed.) Citation

Richardson, A. D. (2014). The Secret Service. The Field, The Dungeon, and The Escape. Project Gutenberg.

Chicago Style (17th ed.) Citation

Richardson, Albert D. The Secret Service. The Field, The Dungeon, and The Escape. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Richardson, Albert D. The Secret Service. The Field, The Dungeon, and The Escape. Project Gutenberg, 2014.

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