Jakobs, H., & Schieffer, T. (1968). Kölner historische Abhandlungen. Böhlau.
Chicago Style (17th ed.) CitationJakobs, Hermann, and Theodor Schieffer. Kölner Historische Abhandlungen. Köln [u.a.]: Böhlau, 1968.
MLA (8th ed.) CitationJakobs, Hermann, and Theodor Schieffer. Kölner Historische Abhandlungen. Böhlau, 1968.
Warning: These citations may not always be 100% accurate.