Burke, E., & Pomeranz, K. (2009). The environment and world history. AUWSF.
Cita Chicago Style (17a ed.)Burke, Edmund, y Kenneth Pomeranz. The Environment and World History. Berkeley: AUWSF, 2009.
Cita MLA (9a ed.)Burke, Edmund, y Kenneth Pomeranz. The Environment and World History. AUWSF, 2009.
Precaución: Estas citas no son 100% exactas.