O'Donnell, P., & DeCell, K. (2019). A century of service: SFS 100, Georgetown University (First edition.). Georgetown University Edmund A. Walsh School of Foreign Service.
Chicago-Zitierstil (17. Ausg.)O'Donnell, Paul, und Ken DeCell. A Century of Service: SFS 100, Georgetown University. First edition. [Washington, DC]: Georgetown University Edmund A. Walsh School of Foreign Service, 2019.
MLA-Zitierstil (9. Ausg.)O'Donnell, Paul, und Ken DeCell. A Century of Service: SFS 100, Georgetown University. First edition. Georgetown University Edmund A. Walsh School of Foreign Service, 2019.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.