WebMD. https://www.webmd.com/sleep-disorders/features/jet-lag-remedies#1
Diakses 14 Mei 2019Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/12781-overcoming-jet-lag/management-and-treatment
Diakses 14 Mei 2019Mayo Clinic. https://www.mayoclinic.org/diseases-conditions/jet-lag/symptoms-causes/syc-20374027
Diakses 14 Mei 2019Skyscanner. https://www.skyscanner.net/news/jetlag-15-tips-beating-timezone-tiredness
Diakses 14 Mei 2019