APA (7th ed.) Citation

McGuinn, R., Steffe, W., & Howe, J. W. (2003). Battle Hymn of the Republic. Project Gutenberg.

Chicago Style (17th ed.) Citation

McGuinn, Roger, William Steffe, and Julia Ward Howe. Battle Hymn of the Republic. Project Gutenberg, 2003.

MLA (9th ed.) Citation

McGuinn, Roger, et al. Battle Hymn of the Republic. Project Gutenberg, 2003.

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