APA (7th ed.) Citation

Hellman, H. (1975). Communications in the world of the future (New rev. ed.). M. Evans.

Chicago Style (17th ed.) Citation

Hellman, Hal. Communications in the World of the Future. New rev. ed. New York: M. Evans, 1975.

MLA (9th ed.) Citation

Hellman, Hal. Communications in the World of the Future. New rev. ed. M. Evans, 1975.