APA (7th ed.) Citation

Watkins, G., & Buchanan, R. A. (1975). Man and the steam engine / (by) G. Watkins and R.A. Buchanan. Priory Press.

Chicago Style (17th ed.) Citation

Watkins, George, and R. A. Buchanan. Man and the Steam Engine / (by) G. Watkins and R.A. Buchanan. London: Priory Press, 1975.

MLA (9th ed.) Citation

Watkins, George, and R. A. Buchanan. Man and the Steam Engine / (by) G. Watkins and R.A. Buchanan. Priory Press, 1975.

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