(1970). Voltage stabilizing and reference tubes, counter, selector and indicator tubes, trigger tubes and switching diodes, thyratrons, industrial rectifying tubes, ignitrons, high voltage rectifying tubes, miscellaneous, associated accessories ([1st ed.].). Philips.
Citácia podle Chicago (17th ed.)Voltage Stabilizing and Reference Tubes, Counter, Selector and Indicator Tubes, Trigger Tubes and Switching Diodes, Thyratrons, Industrial Rectifying Tubes, Ignitrons, High Voltage Rectifying Tubes, Miscellaneous, Associated Accessories. [1st ed.]. [S.l.]: Philips, 1970.
Citácia podľa MLA (8th ed.)Voltage Stabilizing and Reference Tubes, Counter, Selector and Indicator Tubes, Trigger Tubes and Switching Diodes, Thyratrons, Industrial Rectifying Tubes, Ignitrons, High Voltage Rectifying Tubes, Miscellaneous, Associated Accessories. [1st ed.]. Philips, 1970.