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-Zitierstil (17. Ausg.)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-Zitierstil (8. Ausg.)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.
警告：这些引文格式不一定是100％准确.