Groups IV (exhibition London, Waddington Galleries, 3 - 28.2.1981).

MLA

Groups Iv (exhibition London, Waddington Galleries, 3 - 28.2.1981). London: Waddington Galleries, 1981.

APA

(1981). Groups IV (exhibition London, Waddington Galleries, 3 - 28.2.1981). London: Waddington Galleries.

Chicago

Groups IV (exhibition London, Waddington Galleries, 3 - 28.2.1981). London: Waddington Galleries, 1981.