APA (7th ed.) Citation

Bell, R. L. (1973). Negative electron affinity devices. Clarendon Press.

Chicago Style (17th ed.) Citation

Bell, R. L. Negative Electron Affinity Devices. Oxford: Clarendon Press, 1973.

MLA (9th ed.) Citation

Bell, R. L. Negative Electron Affinity Devices. Clarendon Press, 1973.

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