APA (7th ed.) Citation

Lampe, J. R. (1986). The Bulgarian economy in the twentieth century. Croom Helm.

Chicago Style (17th ed.) Citation

Lampe, John R. The Bulgarian Economy in the Twentieth Century. London: Croom Helm, 1986.

MLA (9th ed.) Citation

Lampe, John R. The Bulgarian Economy in the Twentieth Century. Croom Helm, 1986.