Robert Motherwell : Selections from a current series 'Open' 1967-1969.

MLA

Robert Motherwell : Selections From a Current Series 'open' 1967-1969. New York: Marlborough-Gerson Gallery Inc, 1969.

APA

(1969). Robert Motherwell : Selections from a current series 'Open' 1967-1969. New York: Marlborough-Gerson Gallery Inc.

Chicago

Robert Motherwell: Selections From a Current Series 'open' 1967-1969. New York: Marlborough-Gerson Gallery Inc, 1969.