WebMD. https://www.webmd.com/lung/copd/ss/slideshow-copd-exercises
Diakses pada 6 Desember 2020Harvard Health Publishing. https://www.health.harvard.edu/newsletter_article/take-the-plunge-for-your-heart
Diakses pada 6 Desember 2020Healthline. https://www.healthline.com/health/how-to-increase-lung-capacity
Diakses pada 6 Desember 2020American Lung Association. https://www.lung.org/lung-health-diseases/wellness/exercise-and-lung-health
Diakses pada 6 Desember 2020My Heal the Vet. https://www.myhealth.va.gov/mhv-portal-web/ss20181019-build-healthy-lungs
Diakses pada 6 Desember 2020