O'Casey, S. (1971). Collected plays. MacMillan [etc.].
Cita Chicago Style (17a ed.)O'Casey, Sean. Collected Plays. Basingstoke [etc.]: MacMillan [etc.], 1971.
Cita MLA (9a ed.)O'Casey, Sean. Collected Plays. MacMillan [etc.], 1971.
Precaución: Estas citas no son 100% exactas.