APA (7th ed.) Citation

(1981). Encyclopedia of information systems and services (4th ed.). Gale Research.

Chicago Style (17th ed.) Citation

Encyclopedia of Information Systems and Services. 4th ed. Detroit: Gale Research, 1981.

MLA (9th ed.) Citation

Encyclopedia of Information Systems and Services. 4th ed. Gale Research, 1981.

Warning: These citations may not always be 100% accurate.