MLA

Sugano, Kentaro, et al. Double-balloon Endoscopy. Springer Japan, 2006.

APA

Sugano, K., Kita, H., Kita, H.Sugano, K., & Yamamoto, H., & Yamamoto, H. (2006). Double-Balloon Endoscopy. Springer Japan.

Chicago

Sugano, Kentaro, H Kita, Hiroto Kita, K Sugano, H Yamamoto, and Hironori Yamamoto. Double-Balloon Endoscopy. : Springer Japan, 2006.