Cita APA

Freedman, D., Pisani, R., & Purves, R. (1998). Statistics (3rd ed.). New York: W.W. Norton.

Chicago Style Citation

Freedman, David, Robert Pisani, i Roger Purves. Statistics. 3rd ed. New York: W.W. Norton, 1998.

Cita MLA

Freedman, David, Robert Pisani, i Roger Purves. Statistics. 3rd ed. New York: W.W. Norton, 1998.