Cita APA (7th ed.)

StataCorp LP. (2005). Stata quick reference and index: Release 9. StataCorp LP.

Cita Chicago (17th ed.)

StataCorp LP. Stata Quick Reference and Index: Release 9. College Station, Tex: StataCorp LP, 2005.

Cita MLA (9th ed.)

StataCorp LP. Stata Quick Reference and Index: Release 9. StataCorp LP, 2005.

Atenció: Aquestes cites poden no estar 100% correctes.