APA (7th ed.) Citation

Gray, A. (2012). Lord Kelvin An account of his scientific life and work. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gray, Andrew. Lord Kelvin An Account of His Scientific Life and Work. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Gray, Andrew. Lord Kelvin An Account of His Scientific Life and Work. Project Gutenberg, 2012.

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