"Katika kitabu chake cha kumbukumbu cha ""Confessions of an Advertising Man,"" David Ogilvy aliandika: ""Ikiwa unaweza kujifanya kuwa muhimu kwa mteja, huwezi kufukuzwa."""
David Ogilvy aliandika kitabu cha kumbukumbu kiitwacho Confessions of an Advertising Man.