APA-čujuhus (7. p.)
Roberts, C. (2007). The unnatural history of the sea. Island Press/Shearwater Books.
Chicago-čujuhus (17. p.)
Roberts, Callum. The Unnatural History of the Sea. Washington, DC: Island Press/Shearwater Books, 2007.
MLA-čujuhus (9. p.)
Roberts, Callum. The Unnatural History of the Sea. Island Press/Shearwater Books, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.