APA (7e ed.) Bronvermelding

BLACK JOANNE S. (2006). NO MORE COLD CALLING. WARNER BUSINESS BOOKS.

Chicago (17e ed.) Bronvermelding

BLACK JOANNE S. NO MORE COLD CALLING. NEW YORK: WARNER BUSINESS BOOKS, 2006.

MLA (9e ed.) Bronvermelding

BLACK JOANNE S. NO MORE COLD CALLING. WARNER BUSINESS BOOKS, 2006.