APA (7th ed.) Citation

Communications Trends, Inc. (1984). Computer publishers & publications: An international directory and yearbook (1984 ed.). Communications Trends, Inc..

Chicago Style (17th ed.) Citation

Communications Trends, Inc. Computer Publishers & Publications: An International Directory and Yearbook. 1984 ed. New Rochelle, N.Y.: Communications Trends, Inc., 1984.

MLA (9th ed.) Citation

Communications Trends, Inc. Computer Publishers & Publications: An International Directory and Yearbook. 1984 ed. Communications Trends, Inc., 1984.