APA (7th ed.) Citation

Green, A. K. (2011). The Amethyst Box. Project Gutenberg.

Chicago Style (17th ed.) Citation

Green, Anna Katharine. The Amethyst Box. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Green, Anna Katharine. The Amethyst Box. Project Gutenberg, 2011.

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