Cita APA

Obot, I. S., & Saxena, S. (2005). Substance use among young people in urban environments. [Geneva, Switzerland]: World Health Organization.

Citación estilo Chicago

Obot, Isidore Silas, y Shekhar Saxena. Substance Use Among Young People in Urban Environments. [Geneva, Switzerland]: World Health Organization, 2005.

Cita MLA

Obot, Isidore Silas, y Shekhar Saxena. Substance Use Among Young People in Urban Environments. [Geneva, Switzerland]: World Health Organization, 2005.