KAUL, M. (2017). THE NEW GRAMMAR TREE BASIC ENGLISH GRAMMAR AND COMPOSITION - BOOK 6. OXFORD UNIVERSITY PRESS.
芝加哥风格引文KAUL, MRIDULA. THE NEW GRAMMAR TREE BASIC ENGLISH GRAMMAR AND COMPOSITION - BOOK 6. NEW DELHI: OXFORD UNIVERSITY PRESS, 2017.
MLA引文KAUL, MRIDULA. THE NEW GRAMMAR TREE BASIC ENGLISH GRAMMAR AND COMPOSITION - BOOK 6. OXFORD UNIVERSITY PRESS, 2017.
警告：这些引文格式不一定是100％准确.