Krewson, M. B. (1986). Berlin: 750 Years: A selective Bibliography. Library of Congress.
Chicago-Zitierstil (17. Ausg.)Krewson, Margrit B. Berlin: 750 Years: A Selective Bibliography. Washington, D.C.: Library of Congress, 1986.
MLA-Zitierstil (8. Ausg.)Krewson, Margrit B. Berlin: 750 Years: A Selective Bibliography. Library of Congress, 1986.
警告：这些引文格式不一定是100％准确.