Cita APA (7th ed.)

Kober, A., & Grayzel, S. (1940). History of Jews in Cologne. The Jewish Publication Society of America.

Cita Chicago (17th ed.)

Kober, Adolf, i Solomon Grayzel. History of Jews in Cologne. Philadelphia: The Jewish Publication Society of America, 1940.

Cita MLA (8th ed.)

Kober, Adolf, i Solomon Grayzel. History of Jews in Cologne. The Jewish Publication Society of America, 1940.