APA (7th ed.) Citation

Vogel, R. M. (2010). Elevator Systems of the Eiffel Tower, 1889. Project Gutenberg.

Chicago Style (17th ed.) Citation

Vogel, Robert M. Elevator Systems of the Eiffel Tower, 1889. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Vogel, Robert M. Elevator Systems of the Eiffel Tower, 1889. Project Gutenberg, 2010.

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