Gallagher, S., & Herbert, S. J. A. (1998). PowerBuilder 6.0 unleashed. Sams Pub.
Cita Chicago (17th ed.)Gallagher, Simon, i Simon J. A. Herbert. PowerBuilder 6.0 Unleashed. Indianapolis, IN: Sams Pub, 1998.
Cita MLA (9th ed.)Gallagher, Simon, i Simon J. A. Herbert. PowerBuilder 6.0 Unleashed. Sams Pub, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.