APA (7th ed.) Citation

King, C., Oakley, V., & Stephens, C. H. (2011). From School to Battle-field A Story of the War Days. Project Gutenberg.

Chicago Style (17th ed.) Citation

King, Charles, Violet Oakley, and Charles H. Stephens. From School to Battle-field A Story of the War Days. Project Gutenberg, 2011.

MLA (9th ed.) Citation

King, Charles, et al. From School to Battle-field A Story of the War Days. Project Gutenberg, 2011.

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