Siegel, A. F. (1997). Practical business statistics (3th ed.). Boston: Irwin McGraw-Hill.
Trích dẫn kiểu ChicagoSiegel, Andrew F. Practical Business Statistics. 3th ed. Boston: Irwin McGraw-Hill, 1997.
Deismireacht MLASiegel, Andrew F. Practical Business Statistics. 3th ed. Boston: Irwin McGraw-Hill, 1997.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.