Lee, E. T., & Wang, J. W. (2013). Statistical methods for survival data analysis (Fourth edition.). Wiley, a John Wiley & Sons, Inc..

Lee, Elisa T., and John Wenyu Wang. Statistical Methods for Survival Data Analysis. Fourth edition. Hoboken, New Jersey: Wiley, a John Wiley & Sons, Inc., 2013.

Lee, Elisa T., and John Wenyu Wang. Statistical Methods for Survival Data Analysis. Fourth edition. Wiley, a John Wiley & Sons, Inc., 2013.