APA (7th ed.) Citation

Blish, J., & Orban, P. (2010). The Thing in the Attic. Project Gutenberg.

Chicago Style (17th ed.) Citation

Blish, James, and Paul Orban. The Thing in the Attic. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Blish, James, and Paul Orban. The Thing in the Attic. Project Gutenberg, 2010.

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