Hubbard, R. Glenn. Essentials of economics / R. Hubbard, A. O'Brien. - 2nd ed. - Upper Saddle River, NJ : Pearson, 2009. - xiviii, 635 p. : col. ill. ; 28 cm. Includes index. ISBN: 0132460955 : SR198.00 Subjects--Topical Terms: Economics. Dewey Class. No.: 330 / H861 2009