APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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