APA (7th ed.) Citation

Nock, O. S. (1962). Fifty years of railway signalling. Institution of Railway Signal Engineers.

Chicago Style (17th ed.) Citation

Nock, O. S. Fifty Years of Railway Signalling. London: Institution of Railway Signal Engineers, 1962.

MLA (9th ed.) Citation

Nock, O. S. Fifty Years of Railway Signalling. Institution of Railway Signal Engineers, 1962.

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