APA (7th ed.) Citation

O'Connor, J. L. History of the Kentucky Derby, 1875-1921.

Chicago Style (17th ed.) Citation

O'Connor, John Lawrence. History of the Kentucky Derby, 1875-1921.

MLA (9th ed.) Citation

O'Connor, John Lawrence. History of the Kentucky Derby, 1875-1921.

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