SOUTH WATER PUB. (2000). LOOK & LEARN NUMBERS A FIRST POINT & SAY BOOK. SOUTH WATER PUB.
芝加哥风格引文SOUTH WATER PUB. LOOK & LEARN NUMBERS A FIRST POINT & SAY BOOK. HONG KONG: SOUTH WATER PUB, 2000.
MLA引文SOUTH WATER PUB. LOOK & LEARN NUMBERS A FIRST POINT & SAY BOOK. SOUTH WATER PUB, 2000.
警告：这些引文格式不一定是100％准确.