(2015). Backyard biosecurity practices to keep your birds healthy (Revised March 2015.). U.S. Department of Agriculture, Animal and Plant Health Inspection Service.
Chicago Style (17th ed.) CitationBackyard Biosecurity Practices to Keep Your Birds Healthy. Revised March 2015. [Riverdale, Md.]: U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2015.
MLA (9th ed.) CitationBackyard Biosecurity Practices to Keep Your Birds Healthy. Revised March 2015. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2015.
Warning: These citations may not always be 100% accurate.