APA (7th ed.) Citation

Sudermann, H., & Marshall, B. (2010). The Undying Past. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sudermann, Hermann, and Beatrice Marshall. The Undying Past. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Sudermann, Hermann, and Beatrice Marshall. The Undying Past. Project Gutenberg, 2010.

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