APA (7th ed.) Citation

Nock, O. S. (1969). British railway signalling : a survey of fifty years progress: A survey of fifty years progress. Allen & Unwin.

Chicago Style (17th ed.) Citation

Nock, O. S. British Railway Signalling : A Survey of Fifty Years Progress: A Survey of Fifty Years Progress. London: Allen & Unwin, 1969.

MLA (9th ed.) Citation

Nock, O. S. British Railway Signalling : A Survey of Fifty Years Progress: A Survey of Fifty Years Progress. Allen & Unwin, 1969.

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