APA (7th ed.) Citation

Philippines. Bureau of Mines. (1975). Directory of Philippine producing mines and quarries, petroleum exploration companies and related enterprises. The Bureau.

Chicago Style (17th ed.) Citation

Philippines. Bureau of Mines. Directory of Philippine Producing Mines and Quarries, Petroleum Exploration Companies and Related Enterprises. Manila: The Bureau, 1975.

MLA (9th ed.) Citation

Philippines. Bureau of Mines. Directory of Philippine Producing Mines and Quarries, Petroleum Exploration Companies and Related Enterprises. The Bureau, 1975.