Busch, H., & Hagelstange, R. (1972). Germany: Countryside, cities, villages, and people (29th ed.). Umschau.
Cita Chicago Style (17a ed.)Busch, Harald, y Rudolf Hagelstange. Germany: Countryside, Cities, Villages, and People. 29th ed. Frankfurt: Umschau, 1972.
Cita MLA (9a ed.)Busch, Harald, y Rudolf Hagelstange. Germany: Countryside, Cities, Villages, and People. 29th ed. Umschau, 1972.
Precaución: Estas citas no son 100% exactas.