Cita APA (7th ed.)

Liu, Y., Chu, C., & Tong, N. Left and right: The conjoined brothers (First edition.). Peking University Press.

Cita Chicago (17th ed.)

Liu, Yuehua, Chengzhi Chu, i Niu Tong. Left and Right: The Conjoined Brothers. First edition. : Peking University Press.

Cita MLA (9th ed.)

Liu, Yuehua, et al. Left and Right: The Conjoined Brothers. First edition. Peking University Press.