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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJones, Howard Mumford, और 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJones, Howard Mumford, और Milton R. Stern. The Twentieth Century: With a General Introd. by the Ed. and a Prefatory Essay by Howard Mumford Jones. Penguin Books, 1975.
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