Stata Longitudinal-Data/Panel-Data Reference Manual Release 12 by StataCorp

Stata Multiple-Imputation Reference Manual-Release 12 by StataCorp LP Staff

Stata Survey Data Reference Manual: Release 12 by StataCorp

Stata Release 12, Quick Reference and Index by Strata Corp

Stata Time-Series Reference Manual Release 12 by Statacorp Lp

Stata Survey Data Reference Manual: - Paperback, by StataCorp - Very Good

Stata Survey Data Reference Manual: Release 11

STATA Release 12 Reference S-Z, STATA Corp,