Cita APA (7th ed.)

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.