Style de citation APA

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

Style de citation Chicago

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

Style de citation MLA

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

Attention : ces citations peuvent ne pas être correctes à 100%.