Rembrandt the engraver, 1997: t.p. (Victoria Charles)

Goya, 2013 ECIP t.p. (Victoria Charles) data view (Ph. D., art history)

Charles, Victoria. Dürer [ER], 2011 : publisher supplied information (Dürer by Victoria Charles) copyright frame (translation: Marlena Metcalf)

Schweitzer-online (German) website, March 24, 2021 : (Dürer. Victoria Charles. Shows cover image of title. The title and cover image are the same as the English version. The book summary is in German.)