Παραπομπή APA

Simeons, C. (1978). Coal, its role in tomorrow's technology: A sourcebook on global coal resources. Oxford ; New York: Pergamon Press.

Παραπομπή Chicago Style

Simeons, Charles. Coal, Its Role in Tomorrow's Technology: A Sourcebook On Global Coal Resources. Oxford ; New York: Pergamon Press, 1978.

Παραπομπή MLA

Simeons, Charles. Coal, Its Role in Tomorrow's Technology: A Sourcebook On Global Coal Resources. Oxford ; New York: Pergamon Press, 1978.

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