Cita APA (7a ed.)

Pulliam, H. R., & Dunford, C. (1980). Programmed to learn: An essay on the evolution of culture. Columbia University Press.

Cita Chicago Style (17a ed.)

Pulliam, H. Ronald, y Christopher Dunford. Programmed to Learn: An Essay on the Evolution of Culture. New York: Columbia University Press, 1980.

Cita MLA (9a ed.)

Pulliam, H. Ronald, y Christopher Dunford. Programmed to Learn: An Essay on the Evolution of Culture. Columbia University Press, 1980.