Cita APA (7a ed.)

Ryan, C., Mathews, F., & Banner, J. (1993). Student perceptions of violence: Summary of preliminary findings. Central Toronto Youth Services.

Cita Chicago Style (17a ed.)

Ryan, Colleen, Fred Mathews, y Jorhdin Banner. Student Perceptions of Violence: Summary of Preliminary Findings. Toronto: Central Toronto Youth Services, 1993.

Cita MLA (9a ed.)

Ryan, Colleen, et al. Student Perceptions of Violence: Summary of Preliminary Findings. Central Toronto Youth Services, 1993.