National Portrait Gallery <London>, Dyer, R., & Toksvig, S. (2009). Gay icons: Introduction by Sandi Toksvig. Essay by Richard Dyer. National Portrait Gallery.
Citazione stile Chigago Style (17a edizione)National Portrait Gallery <London>, Richard Dyer, e Sandi Toksvig. Gay Icons: Introduction by Sandi Toksvig. Essay by Richard Dyer. London: National Portrait Gallery, 2009.
Citatione MLA (8a ed.)National Portrait Gallery <London>, et al. Gay Icons: Introduction by Sandi Toksvig. Essay by Richard Dyer. National Portrait Gallery, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.