APA način citiranja (7. izdanje)

Roenneberg, T. (2012). Internal time: Chronotypes, social jet lag, and why you're so tired. Harvard University Press.

Čikaški stil citiranja (17. izdanje)

Roenneberg, Till. Internal Time: Chronotypes, Social Jet Lag, and Why You're so Tired. Cambridge, Mass: Harvard University Press, 2012.

MLA način citiranja (9. izdanje)

Roenneberg, Till. Internal Time: Chronotypes, Social Jet Lag, and Why You're so Tired. Harvard University Press, 2012.