Daily conversation & words / karya Herpinus Simanjuntak English for manpower / oleh Herpinus Simanjuntak Daily conversation and words [rekaman suara] / Herpinus Simanjuntak English for receptionist /Herpinus Simanjuntak; penyunting, Herman Sudrajat Daily conversation & words / karya, Herpines Simanjuntak; editor, Herman Sudrajat Aplicants [and] interviews / karya Herpinus Simanjuntak ; editor, Herman Sudrajat3 bahasa : Inggeris Perancis Indonesia / Herpinus SimanjuntakParlons Francais : conversation de tous les jours = Mari erbicara dalam bahasa Perancis / Herpinus SimanjuntakJapanese grammar & conversation handbook / Herpinus Simanjuntak ; editor, Fita Riyadi, Rika YunitaGerman grammar and conversations handbook / Herpinus Simanjuntak ; editor, Fita Riyadi, Alphonus Nugroho, Eva Nurjannah