Richards, J., & Long, M. (1990). Breakthrough: A Course in English Communication Practice.Workbook. Oxford: Oxford University Press.
Stile di citazione ChicagoRichards, J.c., e M.n Long. Breakthrough: A Course in English Communication Practice.Workbook. Oxford: Oxford University Press, 1990.
Citazione MLARichards, J.c., e M.n Long. Breakthrough: A Course in English Communication Practice.Workbook. Oxford: Oxford University Press, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.