DR LIM, T. C. (2012). STRENGTHEN ENGLISH GRAMMAR FOR SECONDARY LEVELS (1st.). SAP EDUCATION.
Lua i Stíl Chicago (17ú heag.)DR LIM, TAN. CHENG. STRENGTHEN ENGLISH GRAMMAR FOR SECONDARY LEVELS. 1st. SINGAPORE: SAP EDUCATION, 2012.
Lua MLA (9ú heag.)DR LIM, TAN. CHENG. STRENGTHEN ENGLISH GRAMMAR FOR SECONDARY LEVELS. 1st. SAP EDUCATION, 2012.
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