Gaya APA

Dennison, P, E, D, &, G, E. (2009). Brain Gym: Senam Otak (cet. 12). : Grasindo.

Gaya MLA

Dennison, Paul, E., Dennison, &, Gail, E.. "Brain Gym: Senam Otak". cet. 12 : Grasindo, 2009. Text.