APA aipamena

Toynbee, A. J. (1934). A study of history. London: The Genesis of Civilizations.

Chicago Style aipamena

Toynbee, Arnold J. A Study of History. London: The Genesis of Civilizations, 1934.

MLA aipamena

Toynbee, Arnold J. A Study of History. London: The Genesis of Civilizations, 1934.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.