Cita APA (7a ed.)
Sotheby's. (1997). Sotheby's: London, Thursday 5 June 1997 : Important Clocks, Watches, Wristwatches and Barometers. Sotheby's.
Cita estilo Chicago (17a ed.)
Sotheby's. Sotheby's: London, Thursday 5 June 1997 : Important Clocks, Watches, Wristwatches and Barometers. Londres, Inglaterra: Sotheby's, 1997.
Cita MLA (9a ed.)
Sotheby's. Sotheby's: London, Thursday 5 June 1997 : Important Clocks, Watches, Wristwatches and Barometers. Sotheby's, 1997.
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