PARKER, A. (2005). MENTAL MATHS STRATEGIES BOOK- 2. SHETH PUBLISHING HOUSE.
芝加哥风格引文PARKER, ALAN. MENTAL MATHS STRATEGIES BOOK- 2. SHETH PUBLISHING HOUSE, 2005.
MLA引文PARKER, ALAN. MENTAL MATHS STRATEGIES BOOK- 2. SHETH PUBLISHING HOUSE, 2005.
警告：这些引文格式不一定是100％准确.