Παραπομπή APA

Freedman, D., Pisani, R., & Purves, R. (1978). Instructor's mannual for statistics. W. W. Norton & Company.

Παραπομπή Chicago Style

Freedman, David, Robert Pisani, και Roger Purves. Instructor's Mannual for Statistics. New York: W. W. Norton & Company, 1978.

Παραπομπή MLA

Freedman, David, et al. Instructor's Mannual for Statistics. W. W. Norton & Company, 1978.