APA (7th ed.) Citation

Hawtrey, R. G. (1939). The gold standard in theory and practice (4th ed.). Longmans, Green.

Chicago Style (17th ed.) Citation

Hawtrey, R. G. The Gold Standard in Theory and Practice. 4th ed. London, New York, [etc]: Longmans, Green, 1939.

MLA (9th ed.) Citation

Hawtrey, R. G. The Gold Standard in Theory and Practice. 4th ed. Longmans, Green, 1939.