Freire, R., Jones, M. A., Zwier,Lawrence J, & Zimmerman, C. B. (2011). Listening and speaking. Oxford Univ Press.
Lua i Stíl Chicago (17ú heag.)Freire, Robert, Marguerite Ann Jones, Zwier,Lawrence J, agus Cheryl Boyd Zimmerman. Listening and Speaking. Oxford ; New York: Oxford Univ Press, 2011.
Lua MLA (8ú heag.)Freire, Robert, et al. Listening and Speaking. Oxford Univ Press, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.