the proven system of sales ideas, methods, and techniques used by top salespeople everywhere Tracy, Brian creator author. text -us 1995 1995 monographic eng 429 pages : 24 cm. general Brian Tracy BAHAN SUMBANGAN DARIPADA UNGKU JULI MARIAM BINTI UNGKU HAKIM Include index Selling Success in business 0671865196 MalCat 260708 20260708154535.0 eng