Citação norma APA

Gray, G. C., Callahan, J. D., Hawksworth, A. W., Fisher, C. A., & Gaydos, J. C. (1999). Respiratory diseases among U.S. military personnel: Countering emerging threats. Centers for Disease Control and Prevention.

Citação norma Chicago

Gray, G C., J D. Callahan, A W. Hawksworth, C A. Fisher, and J C. Gaydos. Respiratory Diseases Among U.S. Military Personnel: Countering Emerging Threats. Centers for Disease Control and Prevention, 1999.

Citação norma MLA

Gray, G C., et al. Respiratory Diseases Among U.S. Military Personnel: Countering Emerging Threats. Centers for Disease Control and Prevention, 1999.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.