APA (7th ed.) Citation

Ray, W. K. (1925). French foreign trade in pumping machinery. [publisher not identified].

Chicago Style (17th ed.) Citation

Ray, Wilson K. French Foreign Trade in Pumping Machinery. Washington, D.C.: [publisher not identified], 1925.

MLA (9th ed.) Citation

Ray, Wilson K. French Foreign Trade in Pumping Machinery. [publisher not identified], 1925.