SHARPE, P. J. (1986). Barron's How To Prepare For The Toefl Test Of English As A Foreign Language / Goo. Barron's educational series.
Lua i Stíl Chicago (17ú heag.)SHARPE, Pamela J. Barron's How To Prepare For The Toefl Test Of English As A Foreign Language / Goo. Barron's educational series, 1986.
Lua MLA (8ú heag.)SHARPE, Pamela J. Barron's How To Prepare For The Toefl Test Of English As A Foreign Language / Goo. Barron's educational series, 1986.
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