Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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

Precaución: Estas citas no son 100% exactas.