Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.