Cita APA (7a ed.)
Roberts, C. (2007). The unnatural history of the sea. Island Press/Shearwater Books.
Cita Chicago Style (17a ed.)
Roberts, Callum. The Unnatural History of the Sea. Washington, DC: Island Press/Shearwater Books, 2007.
Cita MLA (9a ed.)
Roberts, Callum. The Unnatural History of the Sea. Island Press/Shearwater Books, 2007.
Precaución: Estas citas no son 100% exactas.