Seely, S. (1950). Electron-tube circuits. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Seely, Samuel. Electron-tube Circuits. N.Y.: McGraw-Hill, 1950.
Lua MLA (8ú heag.)Seely, Samuel. Electron-tube Circuits. McGraw-Hill, 1950.
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