Cita APA (7th ed.)

Hatfield, B. (1996). Developing PowerBuilder 5 applications (4th ed.). Sams.

Cita Chicago (17th ed.)

Hatfield, Bill. Developing PowerBuilder 5 Applications. 4th ed. Indianapolis, Ind: Sams, 1996.

Cita MLA (9th ed.)

Hatfield, Bill. Developing PowerBuilder 5 Applications. 4th ed. Sams, 1996.