APA (7th ed.) Citation

(1989). Estimates of undiscovered conventional oil and gas resources in the United States: A part of nation's energy endowment.

Chicago Style (17th ed.) Citation

Estimates of Undiscovered Conventional Oil and Gas Resources in the United States: A Part of Nation's Energy Endowment. Denver, CO, 1989.

MLA (9th ed.) Citation

Estimates of Undiscovered Conventional Oil and Gas Resources in the United States: A Part of Nation's Energy Endowment. 1989.