378624 Lougheed, L. (2011). Barron's IELTS: International English language testing system. Hauppauge, NY : New Age International.
Lua i Stíl Chicago (17ú heag.)378624 Lougheed, Lin. Barron's IELTS: International English Language Testing System. Hauppauge, NY : New Age International, 2011.
Lua MLA (9ú heag.)378624 Lougheed, Lin. Barron's IELTS: International English Language Testing System. Hauppauge, NY : New Age International, 2011.
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