Cita APA (7th ed.)

Caltex (Philippines) Inc. Public Relations Department. (1950). The story of oil. [s.n.

Cita Chicago (17th ed.)

Caltex (Philippines) Inc. Public Relations Department. The Story of Oil. Manila: [s.n, 1950.

Cita MLA (9th ed.)

Caltex (Philippines) Inc. Public Relations Department. The Story of Oil. [s.n, 1950.