APA (7th ed.) Citation

Johnston, A. F., Johnston, M. G., & Sacker, A. M. (2006). Ole Mammy's Torment. Project Gutenberg.

Chicago Style (17th ed.) Citation

Johnston, Annie F., Mary G. Johnston, and Amy M. Sacker. Ole Mammy's Torment. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Johnston, Annie F., et al. Ole Mammy's Torment. Project Gutenberg, 2006.

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