409334 Roberts, J. (1985). Steps to fluency: A short course in communication. Oxford : Pergamon.
Cita Chicago Style (17a ed.)409334 Roberts, Jon. Steps to Fluency: A Short Course in Communication. Oxford : Pergamon, 1985.
Cita MLA (9a ed.)409334 Roberts, Jon. Steps to Fluency: A Short Course in Communication. Oxford : Pergamon, 1985.
Precaución: Estas citas no son 100% exactas.