Cita APA (7a ed.)

Littell, R. C., Stroup, W. W., & Freund, R. J. (2010). SAS for linear models (Fourth edition.). SAS Institute.

Cita Chicago Style (17a ed.)

Littell, Ramon C., Walter W. Stroup, y Rudolf J. Freund. SAS for Linear Models. Fourth edition. Cary, NC: SAS Institute, 2010.

Cita MLA (8a ed.)

Littell, Ramon C., et al. SAS for Linear Models. Fourth edition. SAS Institute, 2010.