APA引文

Philippines (Commonwealth) Bureau of Mines & Philippines (Republic). Bureau of Mines. Information circular. no. 1-. [s.n.

Chicago Style (17th ed.) Citation

Philippines (Commonwealth) Bureau of Mines and Philippines (Republic). Bureau of Mines. Information Circular. No. 1-. Manila: [s.n.

MLA引文

Philippines (Commonwealth) Bureau of Mines and Philippines (Republic). Bureau of Mines. Information Circular. No. 1-. [s.n.

警告：這些引文格式不一定是100％准確.