APA (7th ed.) Citation

O'Casey, S. (1939). I knock at the door: Swift glances back at things that made me/ Sean O'Casey (Third Edition.). Maunsel.

Chicago Style (17th ed.) Citation

O'Casey, Sean. I Knock at the Door: Swift Glances Back at Things That Made Me/ Sean O'Casey. Third Edition. Dublin: Maunsel, 1939.

MLA (9th ed.) Citation

O'Casey, Sean. I Knock at the Door: Swift Glances Back at Things That Made Me/ Sean O'Casey. Third Edition. Maunsel, 1939.

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