APA način citiranja (7. izdanje)
Macdougall, J. D. (2008). Nature's clocks: How scientists measure the age of almost everything. University of California Press.
Čikaški stil citiranja (17. izdanje)
Macdougall, J. D. Nature's Clocks: How Scientists Measure the Age of Almost Everything. Berkeley: University of California Press, 2008.
MLA način citiranja (9. izdanje)
Macdougall, J. D. Nature's Clocks: How Scientists Measure the Age of Almost Everything. University of California Press, 2008.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.