APA (7th ed.) Citation

Horst, Pepper, T., & Muir, R. (2001). Horst: Portraits ; Paris, London, New York. National Portrait Gallery.

Chicago Style (17th ed.) Citation

Horst, Terence Pepper, and Robin Muir. Horst: Portraits ; Paris, London, New York. London: National Portrait Gallery, 2001.

MLA (9th ed.) Citation

Horst, et al. Horst: Portraits ; Paris, London, New York. National Portrait Gallery, 2001.