APA (7th ed.) Citation

Wirt, M. A. (2011). Voice from the Cave. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wirt, Mildred A. Voice from the Cave. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Wirt, Mildred A. Voice from the Cave. Project Gutenberg, 2011.

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