Cita APA (7a ed.)

National Gallery of Art (Estados Unidos). (1989). Retaining the original: Multiple originals, copies, and reproductions. National Gallery of Art ; University press of New England.

Cita Chicago Style (17a ed.)

National Gallery of Art (Estados Unidos). Retaining the Original: Multiple Originals, Copies, and Reproductions. Washington, D.C. : Hanover [etc.]: National Gallery of Art ; University press of New England, 1989.

Cita MLA (9a ed.)

National Gallery of Art (Estados Unidos). Retaining the Original: Multiple Originals, Copies, and Reproductions. National Gallery of Art ; University press of New England, 1989.