PAL, R. (2016). ESSENTIALS OF ENGLISH GRAMMAR & COMPOSITION - BOOK 4. SULTAN CHAND.
芝加哥风格引文PAL, RAJENDRA. ESSENTIALS OF ENGLISH GRAMMAR & COMPOSITION - BOOK 4. NEW DELHI: SULTAN CHAND, 2016.
MLA引文PAL, RAJENDRA. ESSENTIALS OF ENGLISH GRAMMAR & COMPOSITION - BOOK 4. SULTAN CHAND, 2016.
警告：这些引文格式不一定是100％准确.