Lougheed, L. (2004). Barron's how to prepare for the toefl essay: Test of english as a foreign language (Second edition.). Barron's Educational Series.
Lua i Stíl Chicago (17ú heag.)Lougheed, Lin. Barron's How to Prepare for the Toefl Essay: Test of English as a Foreign Language. Second edition. Hauppauge: Barron's Educational Series, 2004.
Lua MLA (9ú heag.)Lougheed, Lin. Barron's How to Prepare for the Toefl Essay: Test of English as a Foreign Language. Second edition. Barron's Educational Series, 2004.
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