Service, C. R. (2011). Army Corps Fiscal Challenges: Frequently Asked Questions. Congressional Research Service.
Chicago-viite (17. p.)Service, Congressional Research. Army Corps Fiscal Challenges: Frequently Asked Questions. Congressional Research Service, 2011.
MLA-viite (9. p.)Service, Congressional Research. Army Corps Fiscal Challenges: Frequently Asked Questions. Congressional Research Service, 2011.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.