APA (7th ed.) Citation

Airy, G. B., & Airy, W. (2004). Autobiography of Sir George Biddell Airy. Project Gutenberg.

Chicago Style (17th ed.) Citation

Airy, George Biddell, and Wilfrid Airy. Autobiography of Sir George Biddell Airy. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Airy, George Biddell, and Wilfrid Airy. Autobiography of Sir George Biddell Airy. Project Gutenberg, 2004.

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