APA (7th ed.) Citation

Nock, O. S. (1967). British steam locomotives at work / by O.S. Nock. Allen and Unwin.

Chicago Style (17th ed.) Citation

Nock, O. S. British Steam Locomotives at Work / by O.S. Nock. Allen and Unwin, 1967.

MLA (9th ed.) Citation

Nock, O. S. British Steam Locomotives at Work / by O.S. Nock. Allen and Unwin, 1967.

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