APA Citation

Brown, G. G., & Brown, G. G. (1972). The twentieth century. London: Ernest Benn Limited.

Chicago Style Citation

Brown, Gerald Griffiths, and Gerald Griffiths Brown. The Twentieth Century. London: Ernest Benn Limited, 1972.

MLA Citation

Brown, Gerald Griffiths, and Gerald Griffiths Brown. The Twentieth Century. London: Ernest Benn Limited, 1972.

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