APA (7th ed.) Citation

Rinehart, M. R. (2010). The circular staircase. Project Gutenberg.

Chicago Style (17th ed.) Citation

Rinehart, Mary Roberts. The Circular Staircase. To be supplied: Project Gutenberg, 2010.

MLA (8th ed.) Citation

Rinehart, Mary Roberts. The Circular Staircase. Project Gutenberg, 2010.

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