Cita APA

SAS Institute, & SAS Institute. (1979). SAS user's guide. Raleigh, N.C.: SAS Institute.

Citación estilo Chicago

SAS Institute, y SAS Institute. SAS User's Guide. Raleigh, N.C.: SAS Institute, 1979.

Cita MLA

SAS Institute, y SAS Institute. SAS User's Guide. Raleigh, N.C.: SAS Institute, 1979.