APA (7th ed.) Citation

Gogarty, O. S. J. William Butler Yeats: A memoir.

Chicago Style (17th ed.) Citation

Gogarty, Oliver St. John. William Butler Yeats: A Memoir.

MLA (9th ed.) Citation

Gogarty, Oliver St. John. William Butler Yeats: A Memoir.

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