APA引文

O'BRIEN, T. SIMPLY GRAMMAR- 2. V-CONNET.

芝加哥风格引文

O'BRIEN, TERRY. SIMPLY GRAMMAR- 2. NEW DELHI: V-CONNET.

MLA引文

O'BRIEN, TERRY. SIMPLY GRAMMAR- 2. V-CONNET.

警告：这些引文格式不一定是100％准确.