No Stones Left Unturned : Hans Kehr and His Contributions to Biliary Surgery from Inception to Worldwide Application in the Modern Era of Laparoscopic Surgery
  MLA
  Berci, George, and Frederick L Greene. No Stones Left Unturned : Hans Kehr and His Contributions to Biliary Surgery From Inception to Worldwide Application In the Modern Era of Laparoscopic Surgery. Springer, 2021.
  APA
  Berci, G., & Greene, F. L. (2021). No Stones Left Unturned : Hans Kehr and His Contributions to Biliary Surgery from Inception to Worldwide Application in the Modern Era of Laparoscopic Surgery. Springer.
  Chicago
  Berci, George, and Frederick L Greene. No Stones Left Unturned : Hans Kehr and His Contributions to Biliary Surgery From Inception to Worldwide Application In the Modern Era of Laparoscopic Surgery. : Springer, 2021.