(2012). National Gallery Technical Bulletin: Vol. 33. National Gallery Company.
Cita Chicago Style (17a ed.)National Gallery Technical Bulletin: Vol. 33. London: National Gallery Company, 2012.
Cita MLA (8a ed.)National Gallery Technical Bulletin: Vol. 33. National Gallery Company, 2012.
Precaución: Estas citas no son 100% exactas.