APA (7e ed.) Bronvermelding

RIES AL. (1986). POSITIONING: A BATTLE FOR YOUR MIND. WARNER BOOK.

Chicago (17e ed.) Bronvermelding

RIES AL. POSITIONING: A BATTLE FOR YOUR MIND. NEW YORK: WARNER BOOK, 1986.

MLA (9e ed.) Bronvermelding

RIES AL. POSITIONING: A BATTLE FOR YOUR MIND. WARNER BOOK, 1986.