Cita APA (7a ed.)

Ambrosius, G., Hubbard, W. H., & Tribe, K. (1989). A social and economic history of twentieth-century Europe. Harvard University Press.

Cita Chicago Style (17a ed.)

Ambrosius, Gerold, William H. Hubbard, y Keith Tribe. A Social and Economic History of Twentieth-century Europe. Cambridge [Mass.]: Harvard University Press, 1989.

Cita MLA (9a ed.)

Ambrosius, Gerold, et al. A Social and Economic History of Twentieth-century Europe. Harvard University Press, 1989.