Sotheby's : : Art at Auction 1989 - '90 / / Edited by Sally Prideaux ; authors Timothy Sammons, Susan Morris, Nicholas Wadley, ...(et al.).

MLA

Prideaux, Sally, et al. Sotheby's : Art At Auction 1989 - '90. London: Sotheby's Publications, 1990.

APA

Prideaux, S., Sammons, T., Morris, S., & Wadley, N. (1990). Sotheby's : Art at Auction 1989 - '90. London: Sotheby's Publications.

Chicago

Prideaux, Sally, Timothy Sammons, Susan Morris, and Nicholas Wadley. Sotheby's: Art At Auction 1989 - '90. London: Sotheby's Publications, 1990.