APA (7th ed.) Citation

United States. Department of Commerce. (1931). German foreign trade in machinery, Jan. 1931. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of Commerce. German Foreign Trade in Machinery, Jan. 1931. [Washington]: [publisher not identified], 1931.

MLA (9th ed.) Citation

United States. Department of Commerce. German Foreign Trade in Machinery, Jan. 1931. [publisher not identified], 1931.

Warning: These citations may not always be 100% accurate.