APA Citatie

RICH, J., ANDERSON, B., SCHWARTZAPFEL, B., & STEIN, M. (2006). Sexual risk for hepatitis B virus infection among hepatitis C virus-negative heroin and cocaine users. Cambridge University Press.

Chicago Style citaat

RICH, J. D., B. J ANDERSON, B. SCHWARTZAPFEL, en M. D STEIN. Sexual Risk for Hepatitis B Virus Infection Among Hepatitis C Virus-negative Heroin and Cocaine Users. Cambridge University Press, 2006.

MLA citatie

RICH, J. D., B. J ANDERSON, B. SCHWARTZAPFEL, en M. D STEIN. Sexual Risk for Hepatitis B Virus Infection Among Hepatitis C Virus-negative Heroin and Cocaine Users. Cambridge University Press, 2006.