APA

INDEPENDENT ENERGY, . (1992). THE 1992 INDUSTRY DIRECTORY -ALL NEW -NEARLY 21,000 LISTINGS. : .

Chicago

INDEPENDENT ENERGY, . 1992. THE 1992 INDUSTRY DIRECTORY -ALL NEW -NEARLY 21,000 LISTINGS. : .

Harvard

INDEPENDENT ENERGY, . (1992). THE 1992 INDUSTRY DIRECTORY -ALL NEW -NEARLY 21,000 LISTINGS. : .

MLA

INDEPENDENT ENERGY, . THE 1992 INDUSTRY DIRECTORY -ALL NEW -NEARLY 21,000 LISTINGS. : . 1992.