Lua APA (7ú heag.)
Kerrod, R., & Evans, T. (1994). Natural resources (Library ed.). Marshall Cavendish.
Lua i Stíl Chicago (17ú heag.)
Kerrod, Robin, agus Ted Evans. Natural Resources. Library ed. New York: Marshall Cavendish, 1994.
Lua MLA (9ú heag.)
Kerrod, Robin, agus Ted Evans. Natural Resources. Library ed. Marshall Cavendish, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.