Lua APA (7ú heag.)

Hughes,John. (2013). Telephone English; Includes phrase bank and role plays. MACMILLAN PUBLISHERS Ltd.

Lua i Stíl Chicago (17ú heag.)

Hughes,John. Telephone English; Includes Phrase Bank and Role Plays. MACMILLAN PUBLISHERS Ltd, 2013.

Lua MLA (8ú heag.)

Hughes,John. Telephone English; Includes Phrase Bank and Role Plays. MACMILLAN PUBLISHERS Ltd, 2013.

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