National Gallery of Art (Washington, DC). (1969). A brief guide to the National Gallery of Art of the United States of America, Washington D.C. National Gallery of Art.
Chicago-Zitierstil (17. Ausg.)National Gallery of Art (Washington, DC). A Brief Guide to the National Gallery of Art of the United States of America, Washington D.C. Washington D.C: National Gallery of Art, 1969.
MLA-Zitierstil (9. Ausg.)National Gallery of Art (Washington, DC). A Brief Guide to the National Gallery of Art of the United States of America, Washington D.C. National Gallery of Art, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.