Lucas, J. R. (1970). The concept of probability. Clarendon Press.
Lua i Stíl Chicago (17ú heag.)Lucas, J. R. The Concept of Probability. Oxford: Clarendon Press, 1970.
Lua MLA (8ú heag.)Lucas, J. R. The Concept of Probability. Clarendon Press, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.