APA (7th ed.) Citation

Heldman lhRobert K. Future telecommunications.

Chicago Style (17th ed.) Citation

Heldman lhRobert K. Future Telecommunications. New York lbMcGraw-Hill lc1992.

MLA (9th ed.) Citation

Heldman lhRobert K. Future Telecommunications.

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