Beer, M. (1976). Fifty years of international socialism: Londres 1935. Minkoff.
Chicago Style (17th ed.) CitationBeer, Max. Fifty Years of International Socialism: Londres 1935. Genève: Minkoff, 1976.
MLA (9th ed.) CitationBeer, Max. Fifty Years of International Socialism: Londres 1935. Minkoff, 1976.