Não informado. Reclamation Era. U.S. Department of the Interior, Bureau of Reclamation.
Chicago-viite (17. p.)Não informado. Reclamation Era. Washington: U.S. Department of the Interior, Bureau of Reclamation.
MLA-viite (8. p.)Não informado. Reclamation Era. U.S. Department of the Interior, Bureau of Reclamation.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.