Hagan, H., McGough, J. P., Thiede, H., Hopkins, S. G., Weiss, N. S., & Alexander, E. R. (2000). Volunteer bias in nonrandomized evaluations of the efficacy of needle-exchange programs. Springer-Verlag.
Citação norma ChicagoHagan, Holly, James P. McGough, Hanne Thiede, Sharon G. Hopkins, Noel S. Weiss, and E. Russell Alexander. Volunteer Bias in Nonrandomized Evaluations of the Efficacy of Needle-exchange Programs. Springer-Verlag, 2000.
Citação norma MLAHagan, Holly, et al. Volunteer Bias in Nonrandomized Evaluations of the Efficacy of Needle-exchange Programs. Springer-Verlag, 2000.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.