HSU.H.P. SCHAUM'S SIGNALS AND SYSTEMS SECOND EDITION (SECOND EDITION.). MC-GRAW HILL.
Lua i Stíl Chicago (17ú heag.)HSU.H.P. SCHAUM'S SIGNALS AND SYSTEMS SECOND EDITION. SECOND EDITION. NEW DELHI: MC-GRAW HILL.
Lua MLA (9ú heag.)HSU.H.P. SCHAUM'S SIGNALS AND SYSTEMS SECOND EDITION. SECOND EDITION. MC-GRAW HILL.
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