APA (7e ed.) Bronvermelding

Churchill, W. A. (1985). Watermarks in Paper in Holland, England, France, etc. in the XVII and XVIII Centuries and their Interconnection (Authorized Reprint of the edition Amsterdam, 1935.). B. de Graaf.

Chicago (17e ed.) Bronvermelding

Churchill, W. A. Watermarks in Paper in Holland, England, France, Etc. in the XVII and XVIII Centuries and Their Interconnection. Authorized Reprint of the edition Amsterdam, 1935. Nieuwkoop: B. de Graaf, 1985.

MLA (8e ed.) Bronvermelding

Churchill, W. A. Watermarks in Paper in Holland, England, France, Etc. in the XVII and XVIII Centuries and Their Interconnection. Authorized Reprint of the edition Amsterdam, 1935. B. de Graaf, 1985.