APA (7th ed.) Citation

Spangenberg К. R. Karl. (1948). Vacuum Tubes. New York, McGRAW-HILL BOOK COMPANY, ШТС, 1948.

Chicago Style (17th ed.) Citation

Spangenberg К. R. Karl. Vacuum Tubes. New York, McGRAW-HILL BOOK COMPANY, ШТС, 1948, 1948.

MLA (9th ed.) Citation

Spangenberg К. R. Karl. Vacuum Tubes. New York, McGRAW-HILL BOOK COMPANY, ШТС, 1948, 1948.