Citazione Stile APA (7a Edizione)

Burke, K., & Brooks, J. (2000). Wavelength: Pre-intermediate coursebook. Pearson Education.

Citazione stile Chigago Style (17a edizione)

Burke, Kathy, e Julia Brooks. Wavelength: Pre-intermediate Coursebook. Essex: Pearson Education, 2000.

Citatione MLA (9a ed.)

Burke, Kathy, e Julia Brooks. Wavelength: Pre-intermediate Coursebook. Pearson Education, 2000.