Mayo Clinic. https://www.mayoclinic.org/tests-procedures/flexible-sigmoidoscopy/about/pac-20394189
Diakses pada 28 April 2020Healthline. https://www.healthline.com/health/sigmoidoscopy
Diakses pada 28 April 2020NIH. https://www.niddk.nih.gov/health-information/diagnostic-tests/flexible-sigmoidoscopyDiakses pada 28 April 2020Cancer Research UK. https://www.cancerresearchuk.org/about-cancer/cancer-in-general/tests/flexible-sigmoidoscopy
Diakses pada 28 April 2020Cleveland Clinic. https://my.clevelandclinic.org/health/diagnostics/4953-flexible-sigmoidoscopy/results-and-follow-up
Diakses pada 28 April 2020Michigan Medicine. https://www.uofmhealth.org/conditions-treatments/digestive-and-liver-health/sigmoidoscopy
Diakses pada 28 April 2020