Irwin, R. (1993). Tips and traps for making money in real estate. McGraw-Hill.
Cita Chicago (17th ed.)Irwin, Robert. Tips and Traps for Making Money in Real Estate. New York: McGraw-Hill, 1993.
Cita MLA (9th ed.)Irwin, Robert. Tips and Traps for Making Money in Real Estate. McGraw-Hill, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.