GUPTA. K. K. (2012). FRANK MODERN CERTIFICATE CHEMISTRY FOR MIDDLE SCHOOL WORKBOOK CLASS- 7 ( 2013- 14 ). FRANK BROS.
芝加哥风格引文GUPTA. K. K. FRANK MODERN CERTIFICATE CHEMISTRY FOR MIDDLE SCHOOL WORKBOOK CLASS- 7 ( 2013- 14 ). FRANK BROS, 2012.
MLA引文GUPTA. K. K. FRANK MODERN CERTIFICATE CHEMISTRY FOR MIDDLE SCHOOL WORKBOOK CLASS- 7 ( 2013- 14 ). FRANK BROS, 2012.
警告：这些引文格式不一定是100％准确.