APA-viite

Hartel, D. M., & Schoenbaum, E. E. (1998). Methadone treatment protects against HIV infection: Two decades of experience in the Bronx, New York City.

Chicago-tyylinen lähdeviittaus

Hartel, D M., ja E E. Schoenbaum. Methadone Treatment Protects against HIV Infection: Two Decades of Experience in the Bronx, New York City. 1998.

MLA-viite

Hartel, D M., ja E E. Schoenbaum. Methadone Treatment Protects against HIV Infection: Two Decades of Experience in the Bronx, New York City. 1998.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.