O'Brien, R. (1966). Robert O'Brien: Grabowski Gallery. Grabowski Gallery.
Chicago Style (17th ed.) CitationO'Brien, Robert. Robert O'Brien: Grabowski Gallery. London: Grabowski Gallery, 1966.
MLA (8th ed.) CitationO'Brien, Robert. Robert O'Brien: Grabowski Gallery. Grabowski Gallery, 1966.
Warning: These citations may not always be 100% accurate.