Cita APA (7a ed.)

SAS Institute & SAS Institute Contributor. (2013). SAS 9. 4 Language Reference: Concepts, Second Edition (Second edition.). SAS Institute.

Cita Chicago Style (17a ed.)

SAS Institute y SAS Institute Contributor. SAS 9. 4 Language Reference: Concepts, Second Edition. Second edition. [Place of publication not identified]: SAS Institute, 2013.

Cita MLA (9a ed.)

SAS Institute y SAS Institute Contributor. SAS 9. 4 Language Reference: Concepts, Second Edition. Second edition. SAS Institute, 2013.