United States. Animal and Plant Health Inspection Service. (2003). Enfermedad exótica de Newcastle: Una enfermedad mortal que afecta a aves de corral y aves mascotas. U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service.
Chicago Style (17th ed.) CitationUnited States. Animal and Plant Health Inspection Service. Enfermedad Exótica De Newcastle: Una Enfermedad Mortal Que Afecta a Aves De Corral Y Aves Mascotas. [Washington, D.C.]: U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 2003.
MLA (9th ed.) CitationUnited States. Animal and Plant Health Inspection Service. Enfermedad Exótica De Newcastle: Una Enfermedad Mortal Que Afecta a Aves De Corral Y Aves Mascotas. U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, 2003.