[Ngspice-users] Question about use and right citation for a book

[Miguel E. F. G. <mef6772@g.rit.edu>]

Hi,
I want to write a book about electronics and Open EDA tools, so  I wanted
to know if I could use ngspice netlist, graphs, and results in my book.
Also, I wanted to know the right way to cite it.

Thanks in advance.

Regards.

MEF