APA-referens

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

Chicago-stil citat

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

MLA-referens

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