APA (7th ed.) Citation

Wirt, M. A. (2010). The Clock Strikes Thirteen. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wirt, Mildred A. The Clock Strikes Thirteen. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Wirt, Mildred A. The Clock Strikes Thirteen. Project Gutenberg, 2010.

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