SPH. (2016). NIGAM WORLD OF KNOWLEDGE - BOOK 5. SHETH PUBLISHING HOUSE.
芝加哥风格引文SPH. NIGAM WORLD OF KNOWLEDGE - BOOK 5. VIKHROLI: SHETH PUBLISHING HOUSE, 2016.
MLA引文SPH. NIGAM WORLD OF KNOWLEDGE - BOOK 5. SHETH PUBLISHING HOUSE, 2016.
警告：这些引文格式不一定是100％准确.