APA (7th ed.) Citation

(1955). Thermionic valves, 1904-1954 : the first fifty years: The first fifty years. Institution of Electrical Engineers.

Chicago Style (17th ed.) Citation

Thermionic Valves, 1904-1954 : The First Fifty Years: The First Fifty Years. Institution of Electrical Engineers, 1955.

MLA (9th ed.) Citation

Thermionic Valves, 1904-1954 : The First Fifty Years: The First Fifty Years. Institution of Electrical Engineers, 1955.

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