(1985). PLTTER user's guide / Alice Barlow, Dexter Hermstad, Jeff Trosin.
Cita Chicago (17th ed.)PLTTER User's Guide / Alice Barlow, Dexter Hermstad, Jeff Trosin. 1985.
Cita MLA (9th ed.)PLTTER User's Guide / Alice Barlow, Dexter Hermstad, Jeff Trosin. 1985.
Atenció: Aquestes cites poden no estar 100% correctes.