SAMSON. T/ VISWESWARAN. (2014). ENGLISH WORKBOOK ORCHIDS - 1. MC GRAW HILL.
芝加哥风格引文SAMSON. T/ VISWESWARAN. ENGLISH WORKBOOK ORCHIDS - 1. MC GRAW HILL, 2014.
MLA引文SAMSON. T/ VISWESWARAN. ENGLISH WORKBOOK ORCHIDS - 1. MC GRAW HILL, 2014.
警告：这些引文格式不一定是100％准确.