APA

INDEPENDENT ENERGY, . (1992). THE ENVIRONMENTAL CHALLENGE -HYDROPOWER -RENEWABLE ENERGUY. : .

Chicago

INDEPENDENT ENERGY, . 1992. THE ENVIRONMENTAL CHALLENGE -HYDROPOWER -RENEWABLE ENERGUY. : .

Harvard

INDEPENDENT ENERGY, . (1992). THE ENVIRONMENTAL CHALLENGE -HYDROPOWER -RENEWABLE ENERGUY. : .

MLA

INDEPENDENT ENERGY, . THE ENVIRONMENTAL CHALLENGE -HYDROPOWER -RENEWABLE ENERGUY. : . 1992.