Lua APA (7ú heag.)

Jakeman, V., & Mcdowell, C. (2001). IELTS practice tests plus 1. Longman.

Lua i Stíl Chicago (17ú heag.)

Jakeman, Vanessa, agus Clare Mcdowell. IELTS Practice Tests Plus 1. Harlow, [England]: Longman, 2001.

Lua MLA (8ú heag.)

Jakeman, Vanessa, agus Clare Mcdowell. IELTS Practice Tests Plus 1. Longman, 2001.

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