Obor Indonesia,19 Ombak,6 ombak5 Oxford university press,4 ORYZA,4 Open Books,3 Otoritas Jasa Keuangan,2 Octopus Books,2 Orange Books2 Oase Mata Air Makna,2 ogyakarta2 Ohio2 Oase publishing,2 Oasis,2 Osae Pustaka,2 Oncor,2 Obor populer1 ONYX, New York1 Osmar White,1 Obor,1