Gaya APA

Surjono, S, S. (2009). The Past Is The Key (Cet. 1). Yogyakarta: Mucommindo Jaya Cemerlang.

Gaya MLA

Surjono, Sugeng, Sapto. "The Past Is The Key". Cet. 1 Yogyakarta: Mucommindo Jaya Cemerlang, 2009. Text.