APA Style

Joylynn, C., Ryan, S. (2013). 101 Must Know Challenging Maths Word Problems Book 1 (1st edition). Singapore: Singapore Asian Publication.

MLA Style

Joylynn, Cheng., Ryan, Sia. "101 Must Know Challenging Maths Word Problems Book 1". 1st edition Singapore: Singapore Asian Publication, 2013. Textbook.