Holtje, B. (1982). Successful real estate negotiation strategy. John Wiley and Sons.
Čikaški stil citiranja (17. izdanje)Holtje, Bert. Successful Real Estate Negotiation Strategy. John Wiley and Sons, 1982.
MLA način citiranja (9. izdanje)Holtje, Bert. Successful Real Estate Negotiation Strategy. John Wiley and Sons, 1982.
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