Bucknell, H. (1981). Energy and the national defense. University Pr.
Cita Chicago (17th ed.)Bucknell, Howard. Energy and the National Defense. Kentucky: University Pr, 1981.
Cita MLA (9th ed.)Bucknell, Howard. Energy and the National Defense. University Pr, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.