APA-Zitierstil (7. Ausg.)

Gordon, R. L. (1979). Coal in the US energy market: History and prospects (2. printing.). Heath.

Chicago-Zitierstil (17. Ausg.)

Gordon, Richard L. Coal in the US Energy Market: History and Prospects. 2. printing. Lexington, Mass: Heath, 1979.

MLA-Zitierstil (9. Ausg.)

Gordon, Richard L. Coal in the US Energy Market: History and Prospects. 2. printing. Heath, 1979.