Cita APA (7a ed.)

Palmer, A. W. (1983). The Penguin dictionary of twentieth-century history (2nd ed.). Penguin Books.

Cita Chicago Style (17a ed.)

Palmer, Alan Warwick. The Penguin Dictionary of Twentieth-century History. 2nd ed. Harmondsworth [etc.]: Penguin Books, 1983.

Cita MLA (9a ed.)

Palmer, Alan Warwick. The Penguin Dictionary of Twentieth-century History. 2nd ed. Penguin Books, 1983.