APA (7th ed.) Citation

Vogel, R. M. (2012). Tunnel Engineering. A Museum Treatment. Project Gutenberg.

Chicago Style (17th ed.) Citation

Vogel, Robert M. Tunnel Engineering. A Museum Treatment. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Vogel, Robert M. Tunnel Engineering. A Museum Treatment. Project Gutenberg, 2012.

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