Παραπομπή APA

Steel, R., & Torrie, J. Principles and procedures of statistics. Mc Grow Hill.

Παραπομπή Chicago Style

Steel, Robert, και James Torrie. Principles and Procedures of Statistics. New York: Mc Grow Hill.

Παραπομπή MLA

Steel, Robert, και James Torrie. Principles and Procedures of Statistics. Mc Grow Hill.