APA (7th ed.) Citation

Copper Development Association (Great Britain). (1938). Copper for earthing. Copper Development Association.

Chicago Style (17th ed.) Citation

Copper Development Association (Great Britain). Copper for Earthing. London: Copper Development Association, 1938.

MLA (9th ed.) Citation

Copper Development Association (Great Britain). Copper for Earthing. Copper Development Association, 1938.

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