(2017). Salk Anti-Polio Vaccine. Great Neck Publishing.
Cita Chicago Style (17a ed.)Salk Anti-Polio Vaccine. Great Neck Publishing, 2017.
Cita MLA (9a ed.)Salk Anti-Polio Vaccine. Great Neck Publishing, 2017.
Precaución: Estas citas no son 100% exactas.