APA (7th ed.) Citation

Vella, C. M., & McGonagle, J. J. (1987). Competitive intelligence in the computer age. Quorum Books.

Chicago Style (17th ed.) Citation

Vella, Carolyn M., and John J. McGonagle. Competitive Intelligence in the Computer Age. New York: Quorum Books, 1987.

MLA (9th ed.) Citation

Vella, Carolyn M., and John J. McGonagle. Competitive Intelligence in the Computer Age. Quorum Books, 1987.