APA (7th ed.) Citation

Frey, D., & Adams, R. (1993). A directory of electronic mail addressing and networks ([3rd ed.].). O'Reilly.

Chicago Style (17th ed.) Citation

Frey, Donnalyn, and Rick Adams. A Directory of Electronic Mail Addressing and Networks. [3rd ed.]. Sebastopol: O'Reilly, 1993.

MLA (9th ed.) Citation

Frey, Donnalyn, and Rick Adams. A Directory of Electronic Mail Addressing and Networks. [3rd ed.]. O'Reilly, 1993.