Microeconomics :
O'Sullivan, Arthur.
Microeconomics : principles, applications, and tools / Arthur O'Sullivan, Steven M. Sheffrin, Stephen J. Perez. - 5th ed. - Upper Saddle River, NJ : Pearson Prentice Hall, c2008. - xxxii, 448 p. : ill. (chiefly col.), map ; 28 cm. - Vango notes .
Microeconomics : principles, applications, and tools / Arthur O'Sullivan, Steven M. Sheffrin, Stephen J. Perez. - 5th ed. - Upper Saddle River, NJ : Pearson Prentice Hall, c2008. - xxxii, 448 p. : ill. (chiefly col.), map ; 28 cm. - Vango notes .