Citazione APA

Raistric, A. (1939). Nature and origin of coal and coal seams. The English University press.

Stile di citazione Chicago

Raistric, A. Nature and Origin of Coal and Coal Seams. LOndon: The English University press, 1939.

Citazione MLA

Raistric, A. Nature and Origin of Coal and Coal Seams. The English University press, 1939.