(1968). The Oxford dictionary of quotations (2nd ed.). Oxford Univ. Pr..
Chicago Style (17th ed.) ZitazioaThe Oxford Dictionary of Quotations. 2nd ed. London: Oxford Univ. Pr., 1968.
MLA (9th ed.) ZitazioaThe Oxford Dictionary of Quotations. 2nd ed. Oxford Univ. Pr., 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.