APA (7th ed.) Citation

O'Casey, S. (1968). Collected plays. MacMillan [etc.].

Chicago Style (17th ed.) Citation

O'Casey, Sean. Collected Plays. Basingstoke [etc.]: MacMillan [etc.], 1968.

MLA (9th ed.) Citation

O'Casey, Sean. Collected Plays. MacMillan [etc.], 1968.

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