APA (7th ed.) Citation

National Portrait Gallery <London>, Dyer, R., & Toksvig, S. (2009). Gay icons: Introduction by Sandi Toksvig. Essay by Richard Dyer. National Portrait Gallery.

Chicago Style (17th ed.) Citation

National Portrait Gallery <London>, Richard Dyer, and Sandi Toksvig. Gay Icons: Introduction by Sandi Toksvig. Essay by Richard Dyer. London: National Portrait Gallery, 2009.

MLA (8th ed.) Citation

National Portrait Gallery <London>, et al. Gay Icons: Introduction by Sandi Toksvig. Essay by Richard Dyer. National Portrait Gallery, 2009.