APA (7th ed.) Citation

United States. Bureau of Agricultural Economics. (1939). Periodicals relating to shipping [listing]. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Agricultural Economics. Periodicals Relating to Shipping [listing]. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Bureau of Agricultural Economics. Periodicals Relating to Shipping [listing]. [s.n.], 1939.