Llanas, A., Williams, L., & Ospina, L. J. (1999). Freestyle 2: Student's book. MacMillan.
Lua i Stíl Chicago (17ú heag.)Llanas, Angela, Libby Williams, agus Luz Janeth Ospina. Freestyle 2: Student's Book. Oxford: MacMillan, 1999.
Lua MLA (9ú heag.)Llanas, Angela, et al. Freestyle 2: Student's Book. MacMillan, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.