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