A Dictionary of Economics, v. 2, pp. 846-51. Mas-Colell, Andreu; Michael D. Whinston, and Jerry R. Green (1995), Microeconomic Theory. Oxford University
從圖形上講,所有位於預算線內或於其上的消費束都構成預算集或機會集。 根據大多數定義,預算集必須緊湊且凸。 Mas-Colell, Andreu; Whinston, Michael D.; Green, Jerry R. Microeconomic Theory. New York: Oxford University
Template:Cite Varian Microeconomic Analysis 3 Mas-Colell, Andreu; Whinston, Michael D.; Green, Jerry R. Microeconomic Theory Indian. 2007: 56–57. Jehle
Wesley, 4th Edition: 2007. 蔡攀龍、張寶塔《總體經濟學》聯經出版2005 Andreu Mas-Colell, Michael D. Whinston, Jerry R. Green《Microeconomic Theory》Oxford University Press, 1995
2004 : William R. King, Rob Kling(英语:Rob Kling) 2005 : Andrew B. Whinston(英语:Andrew B. Whinston) 2006 : Niels Bjørn-Andersen, Phillip Ein-Dor 2007 : Izak Benbasat