APA (7th ed.) Citation

Nock, O. S. (1972). GWR steam / by O.S. Nock. David and Charles.

Chicago Style (17th ed.) Citation

Nock, O. S. GWR Steam / by O.S. Nock. David and Charles, 1972.

MLA (9th ed.) Citation

Nock, O. S. GWR Steam / by O.S. Nock. David and Charles, 1972.

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