Siems, Renke. “Rezension Zu: Data Cartels : The Companies That Control and Monopolize Our Information Sarah Lamdan”. o-bib. Das offene Bibliotheksjournal / Herausgeber VDB 9, no. 4 (November 8, 2022): 1–8. Accessed August 11, 2025. https://o-bib-ojs3test.ub.uni-muenchen.de/index.php/bib/article/view/5902.