Rosen, Kenneth D. Investing in income properties : the big six formula for achieving wealth in real estate / Kenneth D. Rosen. - Hoboken, N.J. : Wiley, c2008 - xi, 254 p. ISBN: 9780470190838 Subjects--Topical Terms: Commercial real estate--United StatesReal estate investment--United States. Subjects--Index Terms: Đầu tư Mỹ Thu nhập Dewey Class. No.: 332.63/24