Cita APA

Pérez Sanín, E. (1976). Colombia. New York, New York: The Population Council.

Citación estilo Chicago

Pérez Sanín, Enrique. Colombia. New York, New York: The Population Council, 1976.

Cita MLA

Pérez Sanín, Enrique. Colombia. New York, New York: The Population Council, 1976.