APA (7th ed.) Citation

American Telephone and Telegraph Company. (1982). Local area data transport terminal interface specifications. American Telephone and Telegraph Company.

Chicago Style (17th ed.) Citation

American Telephone and Telegraph Company. Local Area Data Transport Terminal Interface Specifications. Basking Ridge, NJ: American Telephone and Telegraph Company, 1982.

MLA (9th ed.) Citation

American Telephone and Telegraph Company. Local Area Data Transport Terminal Interface Specifications. American Telephone and Telegraph Company, 1982.