APA

Bachman J. G., O'Malley P. M., Schulenberg J. E., Johnston L. D., Bryant A. L. & Merline A. C. (2002). The decline of substance use in young adulthood : changes in social activities, roles, and beliefs. Mahwah: Lawrence Erlbaum Associates.

Chicago

Bachman Jerald G, O'Malley Patrick M, Schulenberg John E, Johnston Lloyd D, Bryant Alison L and Merline Alicia C. 2002. The decline of substance use in young adulthood : changes in social activities, roles, and beliefs. Mahwah: Lawrence Erlbaum Associates.

Harvard

Bachman J. G., O'Malley P. M., Schulenberg J. E., Johnston L. D., Bryant A. L. and Merline A. C. (2002). The decline of substance use in young adulthood : changes in social activities, roles, and beliefs. Mahwah: Lawrence Erlbaum Associates.

MLA

Bachman Jerald G, O'Malley Patrick M, Schulenberg John E, Johnston Lloyd D, Bryant Alison L and Merline Alicia C. The decline of substance use in young adulthood : changes in social activities, roles, and beliefs. Mahwah: Lawrence Erlbaum Associates. 2002.