(1976). Telecommunications and computer services: A guide to services provided by the Division of Communications and Computer Operations.
Čikaški stil citiranja (17. izdanje)Telecommunications and Computer Services: A Guide to Services Provided by the Division of Communications and Computer Operations. 1976.
MLA način citiranja (9. izdanje)Telecommunications and Computer Services: A Guide to Services Provided by the Division of Communications and Computer Operations. 1976.
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