Cita APA

Nunan, D. (1999). Speak out. Singapore: Thomson Asia ELT.

Chicago Style Citation

Nunan, David. Speak Out. Singapore: Thomson Asia ELT, 1999.

Cita MLA

Nunan, David. Speak Out. Singapore: Thomson Asia ELT, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.