Cita APA (7th ed.)

Krumm, R. (1987). Word perfect 4.2 power tools. Management Information Source, Inc.

Cita Chicago (17th ed.)

Krumm, Rob. Word Perfect 4.2 Power Tools. Oregon: Management Information Source, Inc, 1987.

Cita MLA (9th ed.)

Krumm, Rob. Word Perfect 4.2 Power Tools. Management Information Source, Inc, 1987.