APA (7th ed.) Citation

Gray, E. (2010). Electricity and Magnetism. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gray, Elisha. Electricity and Magnetism. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Gray, Elisha. Electricity and Magnetism. Project Gutenberg, 2010.

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