Applied statistics : a handbook of Genstat analyses

Minitab handbook : updated for release 16

Data analysis using stata

Computer intensive statistical methods : validation model selection and bootstrap / J. S. Urban Hjorth

Extended cox model untuk time-independent covariate yang tidak memenuhi asumsi proportional hazard pada model cox proportional hazard = Extended cox model time for time independent covariates that violate the proportional hazard assumption in cox propotional hazard model