Islam, M. R., & Khan, M. I. (2007). Act prep plus 2019: 5 practice tests + proven strategies + online. Gulf Publishing Comany.
Lua i Stíl Chicago (17ú heag.)Islam, M R., agus M I67137 Khan. Act Prep Plus 2019: 5 Practice Tests + Proven Strategies + Online. Texas: Gulf Publishing Comany, 2007.
Lua MLA (9ú heag.)Islam, M R., agus M I67137 Khan. Act Prep Plus 2019: 5 Practice Tests + Proven Strategies + Online. Gulf Publishing Comany, 2007.
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