Cita APA (7a ed.)

Bergquist, C. W., Peñaranda, R., & Sánchez G., G. (1992). Violence in Colombia: The contemporary crisis in historical perspective. Scholarly Resources Inc.

Cita Chicago Style (17a ed.)

Bergquist, Charles W., Ricardo Peñaranda, y Gonzalo Sánchez G. Violence in Colombia: The Contemporary Crisis in Historical Perspective. Wilmington, Del: Scholarly Resources Inc, 1992.

Cita MLA (9a ed.)

Bergquist, Charles W., et al. Violence in Colombia: The Contemporary Crisis in Historical Perspective. Scholarly Resources Inc, 1992.