APA (7th ed.) Citation

Fettweis, G. B. (1979). World coal resources: Methods of assessment and results. Elsevier Scientific Pub. Co..

Chicago Style (17th ed.) Citation

Fettweis, Günter B. World Coal Resources: Methods of Assessment and Results. Amsterdam ; New York: Elsevier Scientific Pub. Co., 1979.

MLA (9th ed.) Citation

Fettweis, Günter B. World Coal Resources: Methods of Assessment and Results. Elsevier Scientific Pub. Co., 1979.