SINGH, S. MATHS OLYMPIAD INTERNATIONAL MATHEMATICS OLYMPIAD- 5. V & S PUBLISHER.
芝加哥风格引文SINGH, SHRADDHA. MATHS OLYMPIAD INTERNATIONAL MATHEMATICS OLYMPIAD- 5. NEW DELHI: V & S PUBLISHER.
MLA引文SINGH, SHRADDHA. MATHS OLYMPIAD INTERNATIONAL MATHEMATICS OLYMPIAD- 5. V & S PUBLISHER.
警告：这些引文格式不一定是100％准确.