SOOD, V. (2012). VIVA EVERYDAY ENGLISH GRAMMAR AND COMPOSITION- 6. VIVA EDUCATION.
芝加哥风格引文SOOD, VANDANA. VIVA EVERYDAY ENGLISH GRAMMAR AND COMPOSITION- 6. VIVA EDUCATION, 2012.
MLA引文SOOD, VANDANA. VIVA EVERYDAY ENGLISH GRAMMAR AND COMPOSITION- 6. VIVA EDUCATION, 2012.
警告：这些引文格式不一定是100％准确.