Seely, S. (1958). Electron-tube circuits (2a. ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Seely, Samuel. Electron-tube Circuits. 2a. ed. Nueva York: McGraw-Hill, 1958.
Lua MLA (9ú heag.)Seely, Samuel. Electron-tube Circuits. 2a. ed. McGraw-Hill, 1958.
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