Cita APA (7th ed.)

Freund, J. E. (1981). Statistics: A first course (2nd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Freund, John E. Statistics: A First Course. 2nd ed. Englewood Cliffs, NJ : New Jersey: Prentice Hall, 1981.

Cita MLA (9th ed.)

Freund, John E. Statistics: A First Course. 2nd ed. Prentice Hall, 1981.