Cita APA (7th ed.)

Freedman, D. (1978). Statistics. W.W. Norton.

Cita Chicago (17th ed.)

Freedman, David. Statistics. New York: W.W. Norton, 1978.

Cita MLA (9th ed.)

Freedman, David. Statistics. W.W. Norton, 1978.

Atenció: Aquestes cites poden no estar 100% correctes.