APA (7th ed.) Citation

Gielgud, J., & Mangan, R. (2004). Gielgud's letters. Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Gielgud, John, and Richard Mangan. Gielgud's Letters. London: Weidenfeld & Nicolson, 2004.

MLA (9th ed.) Citation

Gielgud, John, and Richard Mangan. Gielgud's Letters. Weidenfeld & Nicolson, 2004.

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