APA (7th ed.) Citation

McAulay, A. (2008). Utility of Quaternions in Physics. Project Gutenberg.

Chicago Style (17th ed.) Citation

McAulay, Alexander. Utility of Quaternions in Physics. Project Gutenberg, 2008.

MLA (9th ed.) Citation

McAulay, Alexander. Utility of Quaternions in Physics. Project Gutenberg, 2008.

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