Cita APA (7a ed.)
Sotheby's. (2004). Sotheby's: London, Thursday 18 November 2004 : Natural History, Travel, Atlases and Maps. Sotheby's.
Cita estilo Chicago (17a ed.)
Sotheby's. Sotheby's: London, Thursday 18 November 2004 : Natural History, Travel, Atlases and Maps. Londres, Inglaterra: Sotheby's, 2004.
Cita MLA (9a ed.)
Sotheby's. Sotheby's: London, Thursday 18 November 2004 : Natural History, Travel, Atlases and Maps. Sotheby's, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.