Weihs, C., & Heilemann, U. (2007). Classification and Clustering in Business Cycle Analysis. Duncker & Humblot.
Chicago Style (17. basım) AtıfWeihs, Claus, ve Ullrich Heilemann. Classification and Clustering in Business Cycle Analysis. Duncker & Humblot, 2007.
MLA (9th ed.) AtıfWeihs, Claus, ve Ullrich Heilemann. Classification and Clustering in Business Cycle Analysis. Duncker & Humblot, 2007.
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