Farmer, J. (1998). Market force, ecology and evolution.
Lua i Stíl Chicago (17ú heag.)Farmer, J. Market Force, Ecology and Evolution. 1998.
Lua MLA (9ú heag.)Farmer, J. Market Force, Ecology and Evolution. 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.