Παραπομπή APA

Hughs, A., & Grawoig, D. (1971). Statistics: A Foundation for Analysis. Addison - Wesley Publising Company.

Παραπομπή Chicago Style

Hughs, Ann, και Dennis Grawoig. Statistics: A Foundation for Analysis. Massachussets: Addison - Wesley Publising Company, 1971.

Παραπομπή MLA

Hughs, Ann, και Dennis Grawoig. Statistics: A Foundation for Analysis. Addison - Wesley Publising Company, 1971.