Cita APA (7a ed.)
Sotheby's. (1999). Sotheby's: London, Thursday 2 December 1999 : The Travel Sale : Books, Maps, Atlases, Natural History and Topographical Pictures. Sotheby's.
Cita estilo Chicago (17a ed.)
Sotheby's. Sotheby's: London, Thursday 2 December 1999 : The Travel Sale : Books, Maps, Atlases, Natural History and Topographical Pictures. Londres, Inglaterra: Sotheby's, 1999.
Cita MLA (9a ed.)
Sotheby's. Sotheby's: London, Thursday 2 December 1999 : The Travel Sale : Books, Maps, Atlases, Natural History and Topographical Pictures. Sotheby's, 1999.
Precaución: Estas citas no son 100% exactas.