APA (7th ed.) Citation

Johansen, H. C. (1987). The Danish economy in the twentieth century. Croom Helm.

Chicago Style (17th ed.) Citation

Johansen, Hans Chr. The Danish Economy in the Twentieth Century. London u.a: Croom Helm, 1987.

MLA (9th ed.) Citation

Johansen, Hans Chr. The Danish Economy in the Twentieth Century. Croom Helm, 1987.