APA-viite (7. p.)

Hugues, J. (2008). Language leader: Workbook with key and audio cd : intermediate. Pearson Education Limited.

Chicago-viite (17. p.)

Hugues, John. Language Leader: Workbook with Key and Audio Cd : Intermediate. Harlow: Pearson Education Limited, 2008.

MLA-viite (8. p.)

Hugues, John. Language Leader: Workbook with Key and Audio Cd : Intermediate. Pearson Education Limited, 2008.

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