Withrow, J. (2002). Effective Writing: Writing skills for intermediate students of American English; Teacher's manual and answer key. Cambridge, UK: Cambridge Univ. Press.
Citação norma ChicagoWithrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English; Teacher's Manual and Answer Key. Cambridge, UK: Cambridge Univ. Press, 2002.
Citação norma MLAWithrow, Jean. Effective Writing: Writing Skills for Intermediate Students of American English; Teacher's Manual and Answer Key. Cambridge, UK: Cambridge Univ. Press, 2002.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.