APA সাইটেশন

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

শিকাগো স্টাইলে সাইটেশন

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

এমএলএ সাইটেশন

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