MLA

Hofbeck, Michael, Karl-Heinz Deeg, and Thomas Rupprecht. Doppler Echocardiography In Infancy and Childhood. Springer International Publishing, 2017.

APA

Hofbeck, M., Deeg, K., & Rupprecht, T. (2017). Doppler Echocardiography in Infancy and Childhood. Springer International Publishing.

Chicago

Hofbeck, Michael, Karl-Heinz Deeg, and Thomas Rupprecht. Doppler Echocardiography In Infancy and Childhood. : Springer International Publishing, 2017.