Davis, J. A. (1985). The logic of causal order. Sage Publications.
Lua i Stíl Chicago (17ú heag.)Davis, James Allan. The Logic of Causal Order. Beverly Hills: Sage Publications, 1985.
Lua MLA (8ú heag.)Davis, James Allan. The Logic of Causal Order. Sage Publications, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.