APA (7th ed.) Citation

Barbour, R. H., & Relyea, C. M. (2011). The Turner Twins. Project Gutenberg.

Chicago Style (17th ed.) Citation

Barbour, Ralph Henry, and C. M. Relyea. The Turner Twins. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Barbour, Ralph Henry, and C. M. Relyea. The Turner Twins. Project Gutenberg, 2011.

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