APA (7th ed.) Citation

Ehmcke, F. H. (1974). Graphic trade symbols by German designers, from the 1907 Klingspor catalog. Dover Publications.

Chicago Style (17th ed.) Citation

Ehmcke, F. H. Graphic Trade Symbols by German Designers, from the 1907 Klingspor Catalog. New York: Dover Publications, 1974.

MLA (9th ed.) Citation

Ehmcke, F. H. Graphic Trade Symbols by German Designers, from the 1907 Klingspor Catalog. Dover Publications, 1974.