APA (7th ed.) Citation

(2004). Scientific American Supplement, No. 455, September 20, 1884. Project Gutenberg.

Chicago Style (17th ed.) Citation

Scientific American Supplement, No. 455, September 20, 1884. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Scientific American Supplement, No. 455, September 20, 1884. Project Gutenberg, 2004.

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