APA (7th ed.) Zitazioa

Elton, . G. (1969). The practice of history. Collins.

Chicago Style (17th ed.) Zitazioa

Elton, G.R. The Practice of History. London,: Collins, 1969.

MLA (9th ed.) Zitazioa

Elton, G.R. The Practice of History. Collins, 1969.