Unger, M. A., & Karvel, G. R. (1987). Real estate: Principles and practices (8a. ed.). South-Western.
Chicago-čujuhus (17. p.)Unger, Maurice Albert, juo George R. Karvel. Real Estate: Principles and Practices. 8a. ed. Cincinnati: South-Western, 1987.
MLA-čujuhus (9. p.)Unger, Maurice Albert, juo George R. Karvel. Real Estate: Principles and Practices. 8a. ed. South-Western, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.