Waugh, T. (2005). Power up your profits: 31 days to better selling (2nd ed.). Hoboken, N.J.: John Wiley & Sons.
Trích dẫn kiểu ChicagoWaugh, Troy. Power Up Your Profits: 31 Days to Better Selling. 2nd ed. Hoboken, N.J.: John Wiley & Sons, 2005.
ציטוט MLAWaugh, Troy. Power Up Your Profits: 31 Days to Better Selling. 2nd ed. Hoboken, N.J.: John Wiley & Sons, 2005.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.