Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

Freedman, David, et al. Statistics. 3rd ed. W. W. Norton & Co., 1998.