Citazione Stile APA (7a Edizione)

Nunan, D. (1999). Second language teaching & learning. Heinle Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Nunan, David. Second Language Teaching & Learning. Boston, Mass: Heinle Cengage Learning, 1999.

Citatione MLA (9a ed.)

Nunan, David. Second Language Teaching & Learning. Heinle Cengage Learning, 1999.