APA引文

SPAWLS , V. (2001). GRAMMAR: HOW TO BE TOP SERIES.

芝加哥风格引文

SPAWLS , VICKY. GRAMMAR: HOW TO BE TOP SERIES. 2001.

MLA引文

SPAWLS , VICKY. GRAMMAR: HOW TO BE TOP SERIES. 2001.

警告：这些引文格式不一定是100％准确.