APA (7th ed.) Citation

National Gallery of Art (U.S.). (1983). Leonardo's last supper : before and after: Before and after. National Gallery of Art.

Chicago Style (17th ed.) Citation

National Gallery of Art (U.S.). Leonardo's Last Supper : Before and After: Before and After. Washington, D.C: National Gallery of Art, 1983.

MLA (9th ed.) Citation

National Gallery of Art (U.S.). Leonardo's Last Supper : Before and After: Before and After. National Gallery of Art, 1983.

Warning: These citations may not always be 100% accurate.