APA (7th ed.) Citation

Armstrong, W. A. (1971). Sean O'Casey. Published for the British Council by Longmen.

Chicago Style (17th ed.) Citation

Armstrong, William A. Sean O'Casey. Harlow, Essex, Eng: Published for the British Council by Longmen, 1971.

MLA (9th ed.) Citation

Armstrong, William A. Sean O'Casey. Published for the British Council by Longmen, 1971.

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