Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.