RAVIRALA, R. MATH WISE: A BOOK OF MENTAL MATHS- 1. BOOKSMITH.
芝加哥风格引文RAVIRALA, RAMESH. MATH WISE: A BOOK OF MENTAL MATHS- 1. BOOKSMITH.
MLA引文RAVIRALA, RAMESH. MATH WISE: A BOOK OF MENTAL MATHS- 1. BOOKSMITH.
警告：这些引文格式不一定是100％准确.
APA引文