MLA

Tominaga, and Hiroaki Kusunoki. Functional Dyspepsia. Springer Singapore, 2018.

APA

Tominaga, T., & Kusunoki, H. (2018). Functional Dyspepsia. Springer Singapore.

Chicago

Tominaga, and Hiroaki Kusunoki. Functional Dyspepsia. : Springer Singapore, 2018.