APA (7th ed.) Citation

Heldman, R. K. (1993). Future telecommunications: Information applications, services, & infrastructure. McGraw-Hill.

Chicago Style (17th ed.) Citation

Heldman, Robert K. Future Telecommunications: Information Applications, Services, & Infrastructure. New York u.a: McGraw-Hill, 1993.

MLA (9th ed.) Citation

Heldman, Robert K. Future Telecommunications: Information Applications, Services, & Infrastructure. McGraw-Hill, 1993.