Cita APA

Smith, J. W. G., & Pollard, R. (1979). Vaccination against influenza: A five-year study in the Post Office.

Chicago Style Citation

Smith, J. W. G., i R. Pollard. Vaccination against Influenza: A Five-year Study in the Post Office. 1979.

Cita MLA

Smith, J. W. G., i R. Pollard. Vaccination against Influenza: A Five-year Study in the Post Office. 1979.