APA (7th ed.) Citation

Lena Abdullah & Lai, M. (2008). A step by step maths problem solving guide 1: Book 4. Jade Green Publications Sdn.Bhd..

Chicago Style (17th ed.) Citation

Lena Abdullah and Magdalene Lai. A Step by Step Maths Problem Solving Guide 1: Book 4. Kuala Lumpur: Jade Green Publications Sdn.Bhd., 2008.

MLA (9th ed.) Citation

Lena Abdullah and Magdalene Lai. A Step by Step Maths Problem Solving Guide 1: Book 4. Jade Green Publications Sdn.Bhd., 2008.

Warning: These citations may not always be 100% accurate.