APA (7th ed.) Citation

Maddison, A. (1989). The world economy in the 20th century / by Angus Maddison. Development Centre of the OECD.

Chicago Style (17th ed.) Citation

Maddison, Angus. The World Economy in the 20th Century / by Angus Maddison. Paris: Development Centre of the OECD, 1989.

MLA (9th ed.) Citation

Maddison, Angus. The World Economy in the 20th Century / by Angus Maddison. Development Centre of the OECD, 1989.

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