APA (7th ed.) Citation

Nicolson, N. (1973). Portrait of a marriage. London: Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Nicolson, Nigel. Portrait of a Marriage. London: Weidenfeld and Nicolson, 1973.

MLA (8th ed.) Citation

Nicolson, Nigel. Portrait of a Marriage. London: Weidenfeld and Nicolson, 1973.

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