Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.