APA Citation

BRUUN, G. (1962). The World in the Twentieth Century. D.C. Heath and Company.

Chicago Style Citation

BRUUN, Geoffrey. The World in the Twentieth Century. D.C. Heath and Company, 1962.

MLA Citation

BRUUN, Geoffrey. The World in the Twentieth Century. D.C. Heath and Company, 1962.

Warning: These citations may not always be 100% accurate.