APA (7th ed.) Citation

Wirt, M. A. (2011). Whispering Walls. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wirt, Mildred A. Whispering Walls. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Wirt, Mildred A. Whispering Walls. Project Gutenberg, 2011.

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