- Author: Ingo Köhler
- Language: German
- Year: 2018
- Author: Dieter Ziegler, Maren Janetzko, Ingo Köhler, Jörg Osterloh
- Language: German
- Year: 2021
Consumer Engineering, 1920s–1970s: Marketing between Expert Planning and Consumer Responsiveness
pdf
- Author: Jan Logemann Gary Cross Ingo Köhler
- Language: English
- Year: 2019