MLA

Marko Duvnjak, and Marko Duvnjak. Dyspepsia In Clinical Practice. Springer New York, 2011.

APA

Marko Duvnjak, M. Duvnjak, & Duvnjak, M. (2011). Dyspepsia in Clinical Practice. Springer New York.

Chicago

Marko Duvnjak, and Marko Duvnjak. Dyspepsia In Clinical Practice. : Springer New York, 2011.