APA (7th ed.) Citation

Cunningham, C. H. (1927). World trade in coal tar dyes, industrial and technical: Spain. [publisher not identified].

Chicago Style (17th ed.) Citation

Cunningham, Charles Henry. World Trade in Coal Tar Dyes, Industrial and Technical: Spain. Washington, D.C.: [publisher not identified], 1927.

MLA (9th ed.) Citation

Cunningham, Charles Henry. World Trade in Coal Tar Dyes, Industrial and Technical: Spain. [publisher not identified], 1927.