BRITANNICA. (2016). BOOK OF ENGLISH - LKG - WORKBOOK. ENCYCLOPEDIA BRITANNICA.
芝加哥风格引文BRITANNICA. BOOK OF ENGLISH - LKG - WORKBOOK. NEW DELHI: ENCYCLOPEDIA BRITANNICA, 2016.
MLA引文BRITANNICA. BOOK OF ENGLISH - LKG - WORKBOOK. ENCYCLOPEDIA BRITANNICA, 2016.
警告：这些引文格式不一定是100％准确.