(1993). Programmable controllers: An engineer's guide / E.A. Parr.
Cita Chicago (17th ed.)Programmable Controllers: An Engineer's Guide / E.A. Parr. 1993.
Cita MLA (9th ed.)Programmable Controllers: An Engineer's Guide / E.A. Parr. 1993.
Atenció: Aquestes cites poden no estar 100% correctes.