APA

Brown T. N., Schulenberg J., Bachman J. G., O'Malley P. M. & Johnston L. D. (20011213). Are risk and protective factors for substance use consistent across historical time?: national data from the high school classes of 1976 through 1997. : Prevention science : the official journal of the Society for Prevention Research.

Chicago

Brown T N, Schulenberg J, Bachman J G, O'Malley P M and Johnston L D. 20011213. Are risk and protective factors for substance use consistent across historical time?: national data from the high school classes of 1976 through 1997. : Prevention science : the official journal of the Society for Prevention Research.

Harvard

Brown T. N., Schulenberg J., Bachman J. G., O'Malley P. M. and Johnston L. D. (20011213). Are risk and protective factors for substance use consistent across historical time?: national data from the high school classes of 1976 through 1997. : Prevention science : the official journal of the Society for Prevention Research.

MLA

Brown T N, Schulenberg J, Bachman J G, O'Malley P M and Johnston L D. Are risk and protective factors for substance use consistent across historical time?: national data from the high school classes of 1976 through 1997. : Prevention science : the official journal of the Society for Prevention Research. 20011213.