Varon, B. (1972). Coke and coking coal availabilities: A potential problem or not? International Bank for Reconstruction and Development.
Chicago-Zitierstil (17. Ausg.)Varon, Bension. Coke and Coking Coal Availabilities: A Potential Problem or Not? [Washington/D. C.]: International Bank for Reconstruction and Development, 1972.
MLA-Zitierstil (9. Ausg.)Varon, Bension. Coke and Coking Coal Availabilities: A Potential Problem or Not? International Bank for Reconstruction and Development, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.