APA (7e ed.) Bronvermelding
Macdougall, J. D. (2013). Frozen earth: The once and future story of ice ages. University of California Press.
Chicago (17e ed.) Bronvermelding
Macdougall, J. D. Frozen Earth: The Once and Future Story of Ice Ages. Berkeley: University of California Press, 2013.
MLA (9e ed.) Bronvermelding
Macdougall, J. D. Frozen Earth: The Once and Future Story of Ice Ages. University of California Press, 2013.
Let op: Deze citaties zijn niet altijd 100% accuraat.