RIES AL. (2004). ORIGIN OF BRANDS: DISCOVER THE NATURAL LAWS...SURVIVAL. HARPER COLLINS PUBLISHERS.
Chicago Style aipamenaRIES AL. ORIGIN OF BRANDS: DISCOVER THE NATURAL LAWS...SURVIVAL. NEW YORK: HARPER COLLINS PUBLISHERS, 2004.
MLA aipamenaRIES AL. ORIGIN OF BRANDS: DISCOVER THE NATURAL LAWS...SURVIVAL. HARPER COLLINS PUBLISHERS, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.