(2005). Clegg & Guttmann: Monument for historical change ; and other social sculptures, community portraits and spontaneous operas ; 1990 - 2005. König.
Chicago-viite (17. p.)Clegg & Guttmann: Monument for Historical Change ; and Other Social Sculptures, Community Portraits and Spontaneous Operas ; 1990 - 2005. Köln: König, 2005.
MLA-viite (8. p.)Clegg & Guttmann: Monument for Historical Change ; and Other Social Sculptures, Community Portraits and Spontaneous Operas ; 1990 - 2005. König, 2005.
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