APA

United States, . (1978). The potential for hydrogen as an energy source. [Washington, D.C: .

Chicago

United States, . 1978. The potential for hydrogen as an energy source. [Washington, D.C: .

Harvard

United States, . (1978). The potential for hydrogen as an energy source. [Washington, D.C: .

MLA

United States, . The potential for hydrogen as an energy source. [Washington, D.C: . 1978.