Não informado. (2018). Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service.
Chicago-viite (17. p.)Não informado. Outlook for U.S. Agricultural Exports. Washington: U.S. Department of Agriculture, Economic Research Service, 2018.
MLA-viite (8. p.)Não informado. Outlook for U.S. Agricultural Exports. U.S. Department of Agriculture, Economic Research Service, 2018.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.