APA (7 वां संस्करण) प्रशस्ति पत्र

DR LIM, T. C. (2012). STRENGTHEN ENGLISH GRAMMAR FOR SECONDARY LEVELS (1st.). SAP EDUCATION.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

DR LIM, TAN. CHENG. STRENGTHEN ENGLISH GRAMMAR FOR SECONDARY LEVELS. 1st. SINGAPORE: SAP EDUCATION, 2012.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

DR LIM, TAN. CHENG. STRENGTHEN ENGLISH GRAMMAR FOR SECONDARY LEVELS. 1st. SAP EDUCATION, 2012.