APA (7th ed.) Citation

Whiteley, O. S. S. The Story of Opal: The Journal of an Understanding Heart.

Chicago Style (17th ed.) Citation

Whiteley, Opal Stanley; Sedgwick. The Story of Opal: The Journal of an Understanding Heart.

MLA (9th ed.) Citation

Whiteley, Opal Stanley; Sedgwick. The Story of Opal: The Journal of an Understanding Heart.

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