GUPTA ,SANJEEVA. (1992). Electronics Communications Systems (4th ed.). McGraw Hill International Editions.
Chicago-viite (17. p.)GUPTA ,SANJEEVA. Electronics Communications Systems. 4th ed. McGraw Hill International Editions, 1992.
MLA-viite (9. p.)GUPTA ,SANJEEVA. Electronics Communications Systems. 4th ed. McGraw Hill International Editions, 1992.
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