Dyfyniad APA

Bijl, H. J. V. D. (1920). The thermionic vacuum tube and its applications. New York: McGaw-Hill Book Company.

Dyfyniad Arddull Chicago

Bijl, H. J. Van Der. The Thermionic Vacuum Tube and Its Applications. New York: McGaw-Hill Book Company, 1920.

Dyfyniad MLA

Bijl, H. J. Van Der. The Thermionic Vacuum Tube and Its Applications. New York: McGaw-Hill Book Company, 1920.

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