Cita APA (7a ed.)

Jones, H. M., & Stern, M. R. (1975). The twentieth century: With a general introd. by the ed. and a prefatory essay by Howard Mumford Jones. Penguin Books.

Cita Chicago Style (17a ed.)

Jones, Howard Mumford, y Milton R. Stern. The Twentieth Century: With a General Introd. by the Ed. and a Prefatory Essay by Howard Mumford Jones. Harmondsworth: Penguin Books, 1975.

Cita MLA (8a ed.)

Jones, Howard Mumford, y Milton R. Stern. The Twentieth Century: With a General Introd. by the Ed. and a Prefatory Essay by Howard Mumford Jones. Penguin Books, 1975.