RahmawatiY. and NilowardonoS. 2018. The Effect of Product Quality, Brand Trust, Price and Sales Promotion on Purchase Decisions on Royal Residence Surabaya (Case Study in PT. Propnex Realti Visit). IJIEEB International Journal of Integrated Education, Engineering and Business eISSN 2615-1596 pISSN 2615-2312. 1, 1 (Mar. 2018), 1-10. DOI:https://doi.org/10.29138/ijieeb.v1i1.792.