Lawrence, M., & Johnson, S. (1998). If you're not out selling, you're being outsold. New York: John Wiley & Sons.
استشهاد بنمط شيكاغوLawrence, Michael, و Steve Johnson. If You're Not Out Selling, You're Being Outsold. New York: John Wiley & Sons, 1998.
MLA استشهادLawrence, Michael, و Steve Johnson. If You're Not Out Selling, You're Being Outsold. New York: John Wiley & Sons, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.