Alejandro, C. L. (2011). Immunization: Dog's best defense. Animal Scene.
Lua i Stíl Chicago (17ú heag.)Alejandro, Chat L. "Immunization: Dog's Best Defense." Animal Scene 2011.
Lua MLA (9ú heag.)Alejandro, Chat L. "Immunization: Dog's Best Defense." Animal Scene, 2011.
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