APA (7th ed.) Citation

Vissering, H. (2010). Zeppelin The Story of a Great Achievement. Project Gutenberg.

Chicago Style (17th ed.) Citation

Vissering, Harry. Zeppelin The Story of a Great Achievement. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Vissering, Harry. Zeppelin The Story of a Great Achievement. Project Gutenberg, 2010.

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