Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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