Παραπομπή APA

Sen, A. K., & Ahmed, A. (1999). Drug abuse and youth: A psychological Study. Gyan Pub. House.

Παραπομπή Chicago Style

Sen, A. K., και Anis Ahmed. Drug Abuse and Youth: A Psychological Study. New Delhi: Gyan Pub. House, 1999.

Παραπομπή MLA

Sen, A. K., και Anis Ahmed. Drug Abuse and Youth: A Psychological Study. Gyan Pub. House, 1999.