APA (7th ed.) Citation

O'Casey, S. (1980). The letters of Sean O'Casey. Cassell.

Chicago Style (17th ed.) Citation

O'Casey, Sean. The Letters of Sean O'Casey. London: Cassell, 1980.

MLA (9th ed.) Citation

O'Casey, Sean. The Letters of Sean O'Casey. Cassell, 1980.

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