Romer, K. (1980). Facts about Germany: The Federal Republic of Germany. Gutersloh : Lexikothek.
芝加哥风格引文Romer, Karl. Facts About Germany: The Federal Republic of Germany. Gutersloh : Lexikothek, 1980.
MLA引文Romer, Karl. Facts About Germany: The Federal Republic of Germany. Gutersloh : Lexikothek, 1980.
警告：这些引文格式不一定是100％准确.