Ombak,95 Ombak71 Oxford University Press,37 Oxford University Press33 Ombak,,16 Open University Press,14 oxford8 Oxford University,5 Obor indonesia3 Oxford University2 Open Books2 Oxford,2 Ocean Geographic2 Otoritas jasa keuangan,2 Ombak Tiga,,1 Oxfod1 Oxford & IBH Pub.1 Oxford English1 One Earth Media1 Open University Press1