APA (7th ed.) Zitazioa

Johnson, C. (2006). Market leader: Upper intermediate business English test file (2a. ed.). Pearson Education Limited.

Chicago Style (17th ed.) Zitazioa

Johnson, Christine. Market Leader: Upper Intermediate Business English Test File. 2a. ed. Essex: Pearson Education Limited, 2006.

MLA (9th ed.) Zitazioa

Johnson, Christine. Market Leader: Upper Intermediate Business English Test File. 2a. ed. Pearson Education Limited, 2006.