Learn about Cancer. American Cancer Society. http://www.cancer.org/cancer/osteosarcoma/. Accessed December 2015.
US National Institutes of Health. National Cancer Institute. Osteosarcoma. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002616/. Updated October 30, 2015. Accessed December 2015.
US National Library of Medicine, PubMed Health. Osteosarcoma. https://www.cancer.gov/types/bone/patient/osteosarcoma-treatment-pdq#section/_1. Accessed December 2015.