Purnomo, S. Y. (2007). Mengenal Rahasia Kecerdasan Otak: Shuang Guan Qi Xia. SGQX Literature.
Chicago Style (17th ed.) CitationPurnomo, Shifu Yonathan. Mengenal Rahasia Kecerdasan Otak: Shuang Guan Qi Xia. SGQX Literature, 2007.
MLA (8th ed.) CitationPurnomo, Shifu Yonathan. Mengenal Rahasia Kecerdasan Otak: Shuang Guan Qi Xia. SGQX Literature, 2007.
Warning: These citations may not always be 100% accurate.