APA (7th ed.) Citation

(2005). Scientific American Supplement, No. 829, November 21, 1891. Project Gutenberg.

Chicago Style (17th ed.) Citation

Scientific American Supplement, No. 829, November 21, 1891. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Scientific American Supplement, No. 829, November 21, 1891. Project Gutenberg, 2005.

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