National Gallery of Art :
brief guide and plan.
APA Citation
National Gallery of Art (U.S.). (1991). National Gallery of Art: brief guide and plan. [Washington, D.C.]: The Gallery.
MLA Citation
National Gallery of Art (U.S.). National Gallery of Art: Brief Guide And Plan. [Washington, D.C.]: The Gallery, 1991.
Warning: These citations may not always be complete (especially for serials).