Healthline. https://www.healthline.com/health/piriformis-syndrome
Diakses pada 10 Desember 2020Family Doctor. https://familydoctor.org/condition/piriformis-syndrome/
Diakses pada 10 Desember 2020Medline Plus. https://medlineplus.gov/ency/patientinstructions/000776.htm
Diakses pada 10 Desember 2020