APA (7th ed.) Citation

Duckworth, W. E., & Hoyle, G. (1969). Electro-slag refining. Chapman & Hall.

Chicago Style (17th ed.) Citation

Duckworth, W. E., and G. Hoyle. Electro-slag Refining. London: Chapman & Hall, 1969.

MLA (9th ed.) Citation

Duckworth, W. E., and G. Hoyle. Electro-slag Refining. Chapman & Hall, 1969.

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