Lucas, O. (1941). Das Olper Land. Coppenrath.
Chicago Style (17th ed.) CitationLucas, Otto. Das Olper Land. Münster: Coppenrath, 1941.
MLA (9th ed.) CitationLucas, Otto. Das Olper Land. Coppenrath, 1941.
Warning: These citations may not always be 100% accurate.