Cita APA (7th ed.)

Krumm, R. (1985). Understanding and using dBase II and III. Simon and Schuster.

Cita Chicago (17th ed.)

Krumm, Rob. Understanding and Using DBase II and III. New York: Simon and Schuster, 1985.

Cita MLA (9th ed.)

Krumm, Rob. Understanding and Using DBase II and III. Simon and Schuster, 1985.