Crandall, R. (2003). Marketing your services: For people who hate to sell (Updated and expanded ed.). McGraw Hill.
Trích dẫn kiểu ChicagoCrandall, Rick. Marketing Your Services: For People Who Hate to Sell. Updated and expanded ed. New Jersey: McGraw Hill, 2003.
Trích dẫn MLACrandall, Rick. Marketing Your Services: For People Who Hate to Sell. Updated and expanded ed. McGraw Hill, 2003.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.