Cita APA (7a ed.)
(2003). Natural gas & electricity. Wiley Periodicals, Inc..
Cita Chicago Style (17a ed.)
Natural Gas & Electricity. [Hoboken, N.J.]: Wiley Periodicals, Inc., 2003.
Cita MLA (9a ed.)
Natural Gas & Electricity. Wiley Periodicals, Inc., 2003.
Precaución: Estas citas no son 100% exactas.