Cita APA

Spangenberg, K. R. (1948). Vacuum tubes. McGraw-Hill Book Co..

Citación estilo Chicago

Spangenberg, Karl R. Vacuum Tubes. New York: McGraw-Hill Book Co., 1948.

Cita MLA

Spangenberg, Karl R. Vacuum Tubes. McGraw-Hill Book Co., 1948.

Warning: These citations may not always be 100% accurate.