National Gallery of Art <Washington, DC>, & Walker, J. (1995). National Gallery of Art, Washington: By John Walker National Gallery of Art, Washington (New and revised ed.). Abrams.
Citazione stile Chigago Style (17a edizione)National Gallery of Art <Washington, DC>, e John Walker. National Gallery of Art, Washington: By John Walker National Gallery of Art, Washington. New and revised ed. New York: Abrams, 1995.
Citatione MLA (8a ed.)National Gallery of Art <Washington, DC>, e John Walker. National Gallery of Art, Washington: By John Walker National Gallery of Art, Washington. New and revised ed. Abrams, 1995.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.