The Ruhr : a study in historical and economic geography

MLA

Pounds, Norman John Greville. The Ruhr : a Study In Historical and Economic Geography. London: Faber and Faber, 1952.

APA

Pounds, N. John Greville. (1952). The Ruhr : a study in historical and economic geography. London: Faber and Faber.

Chicago

Pounds, Norman John Greville, The Ruhr: A Study In Historical and Economic Geography. London: Faber and Faber, 1952.