Lena Abdullah & Lai, M. (2006). A step-by-step Maths problem solving guide 2: Ratios,Rates and proportions,Statistics 1,Transformation. Jade Green Publications.
Chicago Style (17th ed.) CitationLena Abdullah and Magdalene Lai. A Step-by-step Maths Problem Solving Guide 2: Ratios,Rates and Proportions,Statistics 1,Transformation. Kuala Lumpur: Jade Green Publications, 2006.
MLA (9th ed.) CitationLena Abdullah and Magdalene Lai. A Step-by-step Maths Problem Solving Guide 2: Ratios,Rates and Proportions,Statistics 1,Transformation. Jade Green Publications, 2006.
Warning: These citations may not always be 100% accurate.