Davis & Kennedy. (1992). Electronic Communication System (4th ed.). McGraw Hill International Editions.
Tohutoru Kātū Chicago (17th ed.)Davis me Kennedy. Electronic Communication System. 4th ed. McGraw Hill International Editions, 1992.
Tohutoro MLA (9th ed.)Davis me Kennedy. Electronic Communication System. 4th ed. McGraw Hill International Editions, 1992.
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