MLA

Richard, Sophie, and Lynda Morris. Unconcealed, the International Network of Conceptual Artists 1967-77 : Dealers, Exhibitions and Public Collections. 2nd printing 2010 London: Ridinghouse, 2009.

APA

Richard, S., & Morris, L. (2009). Unconcealed, the international network of conceptual artists 1967-77 : dealers, exhibitions and public collections. 2nd printing 2010 London: Ridinghouse.

Chicago

Richard, Sophie, and Lynda Morris. Unconcealed, the International Network of Conceptual Artists 1967-77: Dealers, Exhibitions and Public Collections. 2nd printing 2010 London: Ridinghouse, 2009.