Transapical aortic valve implantation: step by step.

MLA

Walther, Thomas, et al. “Transapical Aortic Valve Implantation: Step by Step.” The Annals of Thoracic Surgery, vol. 87, no. 1, Jan. 2009, pp. 276–83. EBSCOhost, https://doi.org/10.1016/j.athoracsur.2008.08.017.

APA

Walther, T., Dewey, T., Borger, M. A., Kempfert, J., Linke, A., Becht, R., Falk, V., Schuler, G., Mohr, F. W., & Mack, M. (2009). Transapical aortic valve implantation: step by step. The Annals of Thoracic Surgery, 87(1), 276–283. https://doi.org/10.1016/j.athoracsur.2008.08.017

Chicago

Walther, Thomas, Todd Dewey, Michael A Borger, Jörg Kempfert, Axel Linke, Reinhardt Becht, Volkmar Falk, Gerhard Schuler, Friedrich W Mohr, and Michael Mack. 2009. “Transapical Aortic Valve Implantation: Step by Step.” The Annals of Thoracic Surgery 87 (1): 276–83. doi:10.1016/j.athoracsur.2008.08.017.