Gaya APA

Widodo, Y, T, B. (2006). Rumus-rumus Smart Matematika SMP Smart Brain Solution (Cet. 1). : Pena Publisher.

Gaya MLA

Widodo, Y., Triyoga, Budi. "Rumus-rumus Smart Matematika SMP Smart Brain Solution". Cet. 1 : Pena Publisher, 2006. Text.