APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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