How to properly cite PSPP in a publication?

[Charles Johnson]

Hello. Making a short presentation of PSPP I was on the problem of how to cite 
correctly PSPP.

 Using the APA 6th edition format, I did the following:

"Free Software Foundation (2015). GNU PSPP (Version 0.8.5) [Computer Software]. 
Boston, MA"
or
"GNU Project (2015). GNU PSPP (Version 0.8.5) [Computer Software]. Free 
Software Foundation. Boston, MA"

In both you can be added: "Available from: https://www.gnu.org/software/pspp/";

I have reviewed the following thread: 
http://lists.gnu.org/archive/html/pspp-users/2011-11/msg00017.html, 
But really I'm not clear as I do.

In other software: 

For example, IBM recommends for SPSS: 
http://www-01.ibm.com/support/docview.wss?uid=swg21476197

In "R", using the following command "citation ()" recommended: R Core Team 
(2015). R: A language and environment for statistical computing. R Foundation 
for Statistical Computing, Vienna, Austria. URL https://www.R-project.org/.

In GNU Octave "citation" command (cite a manual): John W. Eaton, David Bateman, 
Søren Hauberg, Rik Wehbring (2015). GNU Octave version 4.0.0 manual: a 
high-level interactive language for numerical computations. URL 
http://www.gnu.org/software/octave/doc/interpreter/

Depending on the project, citing the author of a manual, or the software 
itself. Any ideas?

If we reach a consensus, it could be added to the FAQ.


CJT