Simmons, I. G. (1993). Environmental history: A concise introduction. Blackwell.
Lua i Stíl Chicago (17ú heag.)Simmons, I. G. Environmental History: A Concise Introduction. Oxford, UK ; Cambridge, Mass., USA: Blackwell, 1993.
Lua MLA (9ú heag.)Simmons, I. G. Environmental History: A Concise Introduction. Blackwell, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
