Cita APA (7th ed.)

Freund, J. E. (1979). Modern elementary statistics (5th ed.). Prentice-Hall National Book Store.

Cita Chicago (17th ed.)

Freund, John E. Modern Elementary Statistics. 5th ed. Englewood Cliffs, N.J., Manila: Prentice-Hall National Book Store, 1979.

Cita MLA (9th ed.)

Freund, John E. Modern Elementary Statistics. 5th ed. Prentice-Hall National Book Store, 1979.