In edited volumes or collective works, individual chapters/contributions/articles are written by different authors. Editors (which can also be institutions) compile these into a complete work. The individual contributions relate to a common theme and can treat it from different perspectives.
ZHAW swisscovery, for example, is suitable for searching for academic books (monographs, collective works, etc.).
Figure: Edited volume cover and the most important bibliographic information for the contribution (Zotero screenshot)
Gieselmann, A. (2015). Auf dem Weg zu nutzergerechten internetbasierten Interventionen: Welche Bedürfnisse haben unsere Patienten1? In A. Weisbecker, M. Burmester, & A. Schmidt (Eds.), Mensch und Computer 2015 – Workshopband (pp. 133–136).
De Gruyter. https://doi.org/10.1515/9783110443905-018