Lua APA (7ú heag.)

Clandfield, L., & Jeffries, A. (2010). Global :: Pre-Intermediate coursebook (1a. ed.). Macmillan Education.

Lua i Stíl Chicago (17ú heag.)

Clandfield, Lindsay, agus Amanda Jeffries. Global :: Pre-Intermediate Coursebook. 1a. ed. Oxford: Macmillan Education, 2010.

Lua MLA (9ú heag.)

Clandfield, Lindsay, agus Amanda Jeffries. Global :: Pre-Intermediate Coursebook. 1a. ed. Macmillan Education, 2010.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.