APA (7th ed.) Citation

Boumphrey, G. (1960). Engines and how they work / by Geoffrey Boumphrey. Vista Books.

Chicago Style (17th ed.) Citation

Boumphrey, Geoffrey. Engines and How They Work / by Geoffrey Boumphrey. London: Vista Books, 1960.

MLA (9th ed.) Citation

Boumphrey, Geoffrey. Engines and How They Work / by Geoffrey Boumphrey. Vista Books, 1960.

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