Holtje, B. (1982). Successful real estate negotiation strategy. John Wiley and Sons.
Citazione stile Chigago Style (17a edizione)Holtje, Bert. Successful Real Estate Negotiation Strategy. John Wiley and Sons, 1982.
Citatione MLA (9a ed.)Holtje, Bert. Successful Real Estate Negotiation Strategy. John Wiley and Sons, 1982.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.