APA (7th ed.) Citation

Boyles, K., Boyles, V. D., & Wyeth, N. C. (2012). Langford of the Three Bars. Project Gutenberg.

Chicago Style (17th ed.) Citation

Boyles, Kate, Virgil D. Boyles, and N. C. Wyeth. Langford of the Three Bars. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Boyles, Kate, et al. Langford of the Three Bars. Project Gutenberg, 2012.

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