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- Language: English
- Year: 2023
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- Year: 2014
- Author: Andi Schoon (editor), Axel Volmar (editor)
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- Year: 2014
- Author: Axel Volmar (editor), Kyle Stine (editor)
- Language: English
- Year: 2021
- Author: Axel Volmar Kyle Stine
- Language: English
- Year: 2021
- Author: Marek Jancovic Axel Volmar Alexandra Schneider
- Language: English
- Year: 2019