Smithsonian Museum Conservation Institute. Painting conservation glossary of terms.
Citazione stile Chigago Style (17a edizione)Smithsonian Museum Conservation Institute. Painting Conservation Glossary of Terms.
Citatione MLA (9a ed.)Smithsonian Museum Conservation Institute. Painting Conservation Glossary of Terms.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.