APA (7th ed.) Citation

Hobbs, M. (1981). Modern communications switching systems (2d ed.). Tab Books.

Chicago Style (17th ed.) Citation

Hobbs, Marvin. Modern Communications Switching Systems. 2d ed. Blue Ridge Summit, Pa: Tab Books, 1981.

MLA (9th ed.) Citation

Hobbs, Marvin. Modern Communications Switching Systems. 2d ed. Tab Books, 1981.

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