Simpson, G., & Kafka, F. (1957). Basic statistics: A textbook for the first course. Norton.
Lua i Stíl Chicago (17ú heag.)Simpson, George, agus Fritz Kafka. Basic Statistics: A Textbook for the First Course. New York: Norton, 1957.
Lua MLA (9ú heag.)Simpson, George, agus Fritz Kafka. Basic Statistics: A Textbook for the First Course. Norton, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.