APA (7th ed.) Citation

Lyall, M. M., & Lyall, E. H. (2012). The Cubies' ABC. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lyall, Mary Mills, and Earl Harvey Lyall. The Cubies' ABC. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Lyall, Mary Mills, and Earl Harvey Lyall. The Cubies' ABC. Project Gutenberg, 2012.

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