APA (7th ed.) Citation

O'Neill, E. (1960). Beyond the Horizon and 'Marco Millions'. Cape.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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