APA (7e ed.) Bronvermelding
Roberts, C. (2007). The unnatural history of the sea. Island Press/Shearwater Books.
Chicago (17e ed.) Bronvermelding
Roberts, Callum. The Unnatural History of the Sea. Washington, DC: Island Press/Shearwater Books, 2007.
MLA (9e ed.) Bronvermelding
Roberts, Callum. The Unnatural History of the Sea. Island Press/Shearwater Books, 2007.
Let op: Deze citaties zijn niet altijd 100% accuraat.