Routledge,5 Raja Grafindo Persada,4 Richard D. Irwin, Inc.,2 Rineka Cipta,2 Riyadhatul Ihsan,2 Rajawali Pers,2 Review Publishing Company,1 ROSC Domestic Consultant for Indonesia,1 Routledge Cavendish,1 RajaGrafindo Persada,1 Rajawali,1 Rangkang Education,1 RBI Research,1 Red & White Publishing,1 Redwood Burn Limited, Trowbridge, Wiltshire,1 Rekayasa industri,,1