Cita APA (7th ed.)

Sali, A. S. (2019). Black gold: The search for oil to power a nation. Geotecnica Corporation.

Cita Chicago (17th ed.)

Sali, Arthur S. Black Gold: The Search for Oil to Power a Nation. Quezon City: Geotecnica Corporation, 2019.

Cita MLA (9th ed.)

Sali, Arthur S. Black Gold: The Search for Oil to Power a Nation. Geotecnica Corporation, 2019.