ebrary, Inc, Burke, E., & Pomeranz, K. (2009). The environment and world history. University of California Press.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, Edmund Burke, agus Kenneth Pomeranz. The Environment and World History. Berkeley: University of California Press, 2009.
Lua MLA (9ú heag.)ebrary, Inc, et al. The Environment and World History. University of California Press, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.