Unger, M. A. (1969). Real estate: Principles and practices (4th ed.). South-western Pub.
Chicago Style (17. basım) AtıfUnger, Maurice Albert. Real Estate: Principles and Practices. 4th ed. Cincinnati: South-western Pub, 1969.
MLA (9th ed.) AtıfUnger, Maurice Albert. Real Estate: Principles and Practices. 4th ed. South-western Pub, 1969.
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