APA (7th ed.) Citation

Sullivan, F. E. (1931). British machinery trade showing signs of improvement. [publisher not identified].

Chicago Style (17th ed.) Citation

Sullivan, Floyd E. British Machinery Trade Showing Signs of Improvement. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Sullivan, Floyd E. British Machinery Trade Showing Signs of Improvement. [publisher not identified], 1931.