APA (7th ed.) Citation

Whiteley, O., & Sedgwick, E. (2013). The Story of Opal The Journal of an Understanding Heart. Project Gutenberg.

Chicago Style (17th ed.) Citation

Whiteley, Opal, and Ellery Sedgwick. The Story of Opal The Journal of an Understanding Heart. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Whiteley, Opal, and Ellery Sedgwick. The Story of Opal The Journal of an Understanding Heart. Project Gutenberg, 2013.

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