APA Style

Clemson, W. et al (2013). Orange Level, Real World Maths #2: Win a Grand Prix (Cetakan ke-2 (Cetakan ke-1: 2011)). Tunbridge Wells, Kent, UK: Ticktock Entertainment Ltd..

MLA Style

Clemson, Wendy. et al. "Orange Level, Real World Maths #2: Win a Grand Prix". Cetakan ke-2 (Cetakan ke-1: 2011) Tunbridge Wells, Kent, UK: Ticktock Entertainment Ltd., 2013. Text.