APA (7th ed.) Citation

O'Neill, E., & O'Neill, E. (1960). Beyond the horizon. Cape.

Chicago Style (17th ed.) Citation

O'Neill, Eugene, and Eugene O'Neill. Beyond the Horizon. London: Cape, 1960.

MLA (9th ed.) Citation

O'Neill, Eugene, and Eugene O'Neill. Beyond the Horizon. Cape, 1960.

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