APA (7th ed.) Citation

Acock, A. C. (2006). A gentle introduction to Stata. StataCorp LP.

Chicago Style (17th ed.) Citation

Acock, Alan C. A Gentle Introduction to Stata. College Station, Tex.: StataCorp LP, 2006.

MLA (9th ed.) Citation

Acock, Alan C. A Gentle Introduction to Stata. StataCorp LP, 2006.

Warning: These citations may not always be 100% accurate.