APA (7th ed.) Citation

Nicolson, N. (1978). Portrait of a marriage: Nigel Nicolson. Futura.

Chicago Style (17th ed.) Citation

Nicolson, Nigel. Portrait of a Marriage: Nigel Nicolson. London: Futura, 1978.

MLA (8th ed.) Citation

Nicolson, Nigel. Portrait of a Marriage: Nigel Nicolson. Futura, 1978.

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