Romer, K. (1980). Facts about Germany: The Federal Republic of Germany. Gutersloh : Lexikothek.
Chicago-čujuhus (17. p.)Romer, Karl. Facts About Germany: The Federal Republic of Germany. Gutersloh : Lexikothek, 1980.
MLA-čujuhus (9. p.)Romer, Karl. Facts About Germany: The Federal Republic of Germany. Gutersloh : Lexikothek, 1980.
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