Cita APA (7a ed.)

Poe, E. A. (2010). The fall of the house of usher. Project Gutenberg.

Cita Chicago Style (17a ed.)

Poe, Edgar Allan. The Fall of the House of Usher. To be supplied: Project Gutenberg, 2010.

Cita MLA (8a ed.)

Poe, Edgar Allan. The Fall of the House of Usher. Project Gutenberg, 2010.

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