APA

United States, . (2009). Proposals on energy research and development: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, first session, to receive testimony regarding draft legislative proposals on energy research and development, March 5, 2009. Washington: U.S. G.P.O.

Chicago

United States, . 2009. Proposals on energy research and development: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, first session, to receive testimony regarding draft legislative proposals on energy research and development, March 5, 2009. Washington: U.S. G.P.O.

Harvard

United States, . (2009). Proposals on energy research and development: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, first session, to receive testimony regarding draft legislative proposals on energy research and development, March 5, 2009. Washington: U.S. G.P.O.

MLA

United States, . Proposals on energy research and development: hearing before the Committee on Energy and Natural Resources, United States Senate, One Hundred Eleventh Congress, first session, to receive testimony regarding draft legislative proposals on energy research and development, March 5, 2009. Washington: U.S. G.P.O. 2009.