APA (7th ed.) Zitazioa

ENGELS, F. (1950). Socialism: Utopian and scientific. Allen & Unwin.

Chicago Style (17th ed.) Zitazioa

ENGELS, Frederick. Socialism: Utopian and Scientific. London: Allen & Unwin, 1950.

MLA (9th ed.) Zitazioa

ENGELS, Frederick. Socialism: Utopian and Scientific. Allen & Unwin, 1950.