APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (8. p.)

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