National Cancer Institute. (n.d.). Tumor microenvironment. NCI Dictionary of Cancer Terms.
Hanahan, D., & Coussens, L. M. (2012). Accessories to the crime: Functions of cells recruited to the tumor microenvironment. Cancer Cell, 21(3), 309-322.
Whiteside, T. L. (2008). The tumor microenvironment and its role in promoting tumor growth. Oncogene, 27(45), 5904-5912.