Irwin, R. (2007). Tips and traps for getting started as a real estate agent. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoIrwin, Robert. Tips and Traps for Getting Started As a Real Estate Agent. New York: McGraw-Hill, 2007.
Trích dẫn MLAIrwin, Robert. Tips and Traps for Getting Started As a Real Estate Agent. New York: McGraw-Hill, 2007.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.