The British economy, 1870-1939,
by Derek H. Aldcroft [and] Harry W. Richardson.

APA Citation

Aldcroft, D. Howard., Richardson, H. Ward. (1969). The British economy, 1870-1939. London: Macmillan.

MLA Citation

Aldcroft, Derek Howard, and Harry Ward Richardson. The British Economy, 1870-1939. London: Macmillan, 1969.

Warning: These citations may not always be complete (especially for serials).