Johnson, C. (2006). Market leader: Upper intermediate business English test file (2a. ed.). Pearson Education Limited.
Citazione stile Chigago Style (17a edizione)Johnson, Christine. Market Leader: Upper Intermediate Business English Test File. 2a. ed. Essex: Pearson Education Limited, 2006.
Citatione MLA (9a ed.)Johnson, Christine. Market Leader: Upper Intermediate Business English Test File. 2a. ed. Pearson Education Limited, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.