APA (7th ed.) Citation

Nairne, S., & Howgate, S. (2006). The Portrait now. National Portrait Gallery.

Chicago Style (17th ed.) Citation

Nairne, Sandy, and Sarah Howgate. The Portrait Now. London: National Portrait Gallery, 2006.

MLA (9th ed.) Citation

Nairne, Sandy, and Sarah Howgate. The Portrait Now. National Portrait Gallery, 2006.

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