Cita APA (7th ed.)

NAIMAN, A., ROSENFELD, R., & ZIRKEL, G. (1977). Understanding statistics. McGraw-Hill.

Cita Chicago (17th ed.)

NAIMAN, Arnold, Robert ROSENFELD, i Gene ZIRKEL. Understanding Statistics. New York: McGraw-Hill, 1977.

Cita MLA (9th ed.)

NAIMAN, Arnold, et al. Understanding Statistics. McGraw-Hill, 1977.