Government of Canada; Canadian Heritage; Canadian Conservation Institute. "Basic care – Paintings". www.canada.pch.gc.ca (بالإنجليزية). Archived from the original on 2017-04-10. Retrieved 2017-04-10.
Government of Canada; Canadian Heritage; Canadian Conservation Institute. "Basic care – Paintings". www.canada.pch.gc.ca (بالإنجليزية). Archived from the original on 2017-04-10. Retrieved 2017-04-10.