APA (7th ed.) Zitazioa

Johnson, C. (2002). Pre-Intermediate Business English: Test file. Pearson Education.

Chicago Style (17th ed.) Zitazioa

Johnson, Christine. Pre-Intermediate Business English: Test File. Essex: Pearson Education, 2002.

MLA (9th ed.) Zitazioa

Johnson, Christine. Pre-Intermediate Business English: Test File. Pearson Education, 2002.