Citazione Stile APA (7a Edizione)

Kruzas, A. T., & Schmittroth, J. (1981). Encyclopedia of information systems and services (4th ed.). Gale Research.

Citazione stile Chigago Style (17a edizione)

Kruzas, Anthony Thomas, e John Schmittroth. Encyclopedia of Information Systems and Services. 4th ed. Detroit, Mich: Gale Research, 1981.

Citatione MLA (9a ed.)

Kruzas, Anthony Thomas, e John Schmittroth. Encyclopedia of Information Systems and Services. 4th ed. Gale Research, 1981.