Παραπομπή APA

Spiegel, M. R., & Stephens, L. J. (2008). Statistics/4th ed. Tata McGraw Hill Education.

Παραπομπή Chicago Style

Spiegel, Murray R., και Larry J. Stephens. Statistics/4th Ed. NewDelhi: Tata McGraw Hill Education, 2008.

Παραπομπή MLA

Spiegel, Murray R., και Larry J. Stephens. Statistics/4th Ed. Tata McGraw Hill Education, 2008.