APA (7th ed.) Citation

Federated Copper Mines, inc. (1976). Copper is still the world's most important metal next to iron [microform]. Photoduplication Service. University of the Philippines Library.

Chicago Style (17th ed.) Citation

Federated Copper Mines, inc. Copper Is Still the World's Most Important Metal Next to Iron [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.

MLA (9th ed.) Citation

Federated Copper Mines, inc. Copper Is Still the World's Most Important Metal Next to Iron [microform]. Photoduplication Service. University of the Philippines Library, 1976.