APA Citatie

Lawrence, M., & Johnson, S. (1998). If you're not out selling, you're being outsold. New York: John Wiley & Sons.

Chicago Style citaat

Lawrence, Michael, en Steve Johnson. If You're Not Out Selling, You're Being Outsold. New York: John Wiley & Sons, 1998.

MLA citatie

Lawrence, Michael, en Steve Johnson. If You're Not Out Selling, You're Being Outsold. New York: John Wiley & Sons, 1998.