Gaya APA

Mather, O, &. (s.l.). The big ideal : a small book on a big topic . [s.l.]: Ogilvy & Mather.

Gaya MLA

Mather, Ogilvy, &. "The big ideal : a small book on a big topic". [s.l.]: Ogilvy & Mather, s.l.. FIC.