Cita APA

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

Citación estilo Chicago

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

Cita MLA

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