Willms, H. U. (1974). Was zählt. Naumann.
Chicago Style (17th ed.) CitationWillms, Hans U. Was Zählt. Würzburg: Naumann, 1974.
MLA (8th ed.) CitationWillms, Hans U. Was Zählt. Naumann, 1974.
Warning: These citations may not always be 100% accurate.