D'Harnoncourt, A., & Hopps, W. (1969). Étant donnés: 1̊ la chute d'eau, 2̊ le gaz d'éclairage: Reflections on a new work by Marcel Duchamp. Philadelphia Museum of Art.
Chicago Style (17th ed.) CitationD'Harnoncourt, Anne, and Walter Hopps. Étant Donnés: 1̊ La Chute D'eau, 2̊ Le Gaz D'éclairage: Reflections on a New Work by Marcel Duchamp. Philadelphia: Philadelphia Museum of Art, 1969.
MLA (8th ed.) CitationD'Harnoncourt, Anne, and Walter Hopps. Étant Donnés: 1̊ La Chute D'eau, 2̊ Le Gaz D'éclairage: Reflections on a New Work by Marcel Duchamp. Philadelphia Museum of Art, 1969.
Warning: These citations may not always be 100% accurate.