APA (7th ed.) Citation

Tomlinson, P. G. (2006). Bob Cook and the German Spy. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tomlinson, Paul G. Bob Cook and the German Spy. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Tomlinson, Paul G. Bob Cook and the German Spy. Project Gutenberg, 2006.

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