Cita APA

Petroleum Institute of the Philippines, Inc. (1971). Topics on the oil industry. s.n.

Citación estilo Chicago

Petroleum Institute of the Philippines, Inc. Topics on the Oil Industry. [Manila: s.n, 1971.

Cita MLA

Petroleum Institute of the Philippines, Inc. Topics on the Oil Industry. s.n, 1971.

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