APA ציטוט

United States. Extension Service & United States. Federal Extension Service. (1930). Extension service review. The Service : For sale by the Supt. of Docs..

Chicago Style (17th ed.) Citation

United States. Extension Service and United States. Federal Extension Service. Extension Service Review. Washington, D.C.: The Service : For sale by the Supt. of Docs., 1930.

ציטוט MLA

United States. Extension Service and United States. Federal Extension Service. Extension Service Review. The Service : For sale by the Supt. of Docs., 1930.