APA

Nichol K. L., D'Heilly S. J., Greenberg M. E. & Ehlinger E. (20090129). Burden of influenza-like illness and effectiveness of influenza vaccination among working adults aged 50-64 years. : Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Chicago

Nichol Kristin L, D'Heilly Sarah J, Greenberg Michael E and Ehlinger Edward. 20090129. Burden of influenza-like illness and effectiveness of influenza vaccination among working adults aged 50-64 years. : Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

Harvard

Nichol K. L., D'Heilly S. J., Greenberg M. E. and Ehlinger E. (20090129). Burden of influenza-like illness and effectiveness of influenza vaccination among working adults aged 50-64 years. : Clinical infectious diseases : an official publication of the Infectious Diseases Society of America.

MLA

Nichol Kristin L, D'Heilly Sarah J, Greenberg Michael E and Ehlinger Edward. Burden of influenza-like illness and effectiveness of influenza vaccination among working adults aged 50-64 years. : Clinical infectious diseases : an official publication of the Infectious Diseases Society of America. 20090129.