-. (2004). Kupu-Kupu Tak Berkepak. PT.Gramedia Pustaka Utama.
Chicago Style Citation-. Kupu-Kupu Tak Berkepak. PT.Gramedia Pustaka Utama, 2004.
MLA Citation-. Kupu-Kupu Tak Berkepak. PT.Gramedia Pustaka Utama, 2004.
Warning: These citations may not always be 100% accurate.