Smith, H. L. (1996). Energy and environment regulation. Macmillan Press.
Cita Chicago (17th ed.)Smith, Helen Lawton. Energy and Environment Regulation. Houndmills, Basingstoke: Macmillan Press, 1996.
Cita MLA (9th ed.)Smith, Helen Lawton. Energy and Environment Regulation. Macmillan Press, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.