Cita APA (7a ed.)

Freedman, D., Pisani, R., & Purves, R. (1980). Statistics. Norton.

Cita Chicago Style (17a ed.)

Freedman, David, Robert Pisani, y Roger Purves. Statistics. New York: Norton, 1980.

Cita MLA (9a ed.)

Freedman, David, et al. Statistics. Norton, 1980.