APA (7th ed.) Citation

Hope, A., & Edwards, H. C. (2012). The Heart of Princess Osra. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hope, Anthony, and H. C. Edwards. The Heart of Princess Osra. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Hope, Anthony, and H. C. Edwards. The Heart of Princess Osra. Project Gutenberg, 2012.

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