Referências

ESTERAS, Santiago Remachas. Infotech: english for computer users. Student’s book. 4. ed. Cambridge: Cambridge University Press, 2008.

MURPHY, Raymond. English grammar in use. 4. ed. Cambridge: Cambridge University Press, 2012.

PARROTT, Martin. Grammar for English language teachers. Cambridge: Cambridge University Press, 2000.

WHY IT'S important for young people to vote: being politically effective. Disponível em: <http://www.perkel.com/politics/young.htm>. Acesso em: 28 fev. 2012.

WILSON, Bob. Modal verbs exercises. Disponível em: <http://www.autoenglish.org/modalverbs.htm>. Acesso em: 18 fev. 2012.

YOUNG Workers: it’s your responsibility. Disponível em: <http://www.ccohs.ca/youngworkers/resources/workersResp.html>. Acesso em: 29 fev.2012.

YOUNG Workers: for young workers and those involved in work activities. Disponível em: <http://www.youngworker.co.uk/youngpeople/responsibilities/index.htm>. Acesso em: 19 fev. 2012.