Graham, J., & Lowe, S. J. (1991). The facts on file dictionary of telecommunications. Fact On File.
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Chicago-čujuhus (17. p.)
Graham, John, juo Sue J. Lowe. The Facts on File Dictionary of Telecommunications. New York: Fact On File, 1991.
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MLA-čujuhus (9. p.)
Graham, John, juo Sue J. Lowe. The Facts on File Dictionary of Telecommunications. Fact On File, 1991.
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