Cramér, H. (1962). Random variables and probability distributions (2a. ed.). Cambridge University.
Lua i Stíl Chicago (17ú heag.)Cramér, Harald. Random Variables and Probability Distributions. 2a. ed. Nueva York: Cambridge University, 1962.
Lua MLA (9ú heag.)Cramér, Harald. Random Variables and Probability Distributions. 2a. ed. Cambridge University, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.