APA引文

RATNA SAGAR. (2013). COLLINS GRAMMAR IN ACTION - 3. RATNA SAGAR.

芝加哥风格引文

RATNA SAGAR. COLLINS GRAMMAR IN ACTION - 3. RATNA SAGAR, 2013.

MLA引文

RATNA SAGAR. COLLINS GRAMMAR IN ACTION - 3. RATNA SAGAR, 2013.

警告：这些引文格式不一定是100％准确.